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42153042420 = 223251912325451
BaseRepresentation
bin100111010000100001…
…000110000111110100
311000210201101102110100
4213100201012013310
51142312134324140
631210445554100
73021406643256
oct472041060764
9130721342410
1042153042420
1116971325745
128204b75930
133c8a152568
14207c503cd6
15116aa2a530
hex9d08461f4

42153042420 has 72 divisors (see below), whose sum is σ = 134593935840. Its totient is φ = 10649188800.

The previous prime is 42153042383. The next prime is 42153042431. The reversal of 42153042420 is 2424035124.

42153042420 is a `hidden beast` number, since 4 + 215 + 3 + 0 + 424 + 20 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 6159306 + ... + 6166145.

It is an arithmetic number, because the mean of its divisors is an integer number (1869360220).

Almost surely, 242153042420 is an apocalyptic number.

It is an amenable number.

42153042420 is an abundant number, since it is smaller than the sum of its proper divisors (92440893420).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

42153042420 is a wasteful number, since it uses less digits than its factorization.

42153042420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12325485 (or 12325480 counting only the distinct ones).

The product of its (nonzero) digits is 7680, while the sum is 27.

Adding to 42153042420 its reverse (2424035124), we get a palindrome (44577077544).

The spelling of 42153042420 in words is "forty-two billion, one hundred fifty-three million, forty-two thousand, four hundred twenty".

Divisors: 1 2 3 4 5 6 9 10 12 15 18 19 20 30 36 38 45 57 60 76 90 95 114 171 180 190 228 285 342 380 570 684 855 1140 1710 3420 12325451 24650902 36976353 49301804 61627255 73952706 110929059 123254510 147905412 184881765 221858118 234183569 246509020 369763530 443716236 468367138 554645295 702550707 739527060 936734276 1109290590 1170917845 1405101414 2107652121 2218581180 2341835690 2810202828 3512753535 4215304242 4683671380 7025507070 8430608484 10538260605 14051014140 21076521210 42153042420