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143942052 = 223312391619
BaseRepresentation
bin10001001010001…
…10000110100100
3101000212000101010
420211012012210
5243322121202
622141102220
73365326062
oct1045060644
9330760333
10143942052
1174284881
1240257970
1323a8a717
141518d032
15c98476c
hex89461a4

143942052 has 48 divisors (see below), whose sum is σ = 348364800. Its totient is φ = 46210080.

The previous prime is 143942023. The next prime is 143942053. The reversal of 143942052 is 250249341.

It is not an unprimeable number, because it can be changed into a prime (143942053) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 88099 + ... + 89717.

It is an arithmetic number, because the mean of its divisors is an integer number (7257600).

Almost surely, 2143942052 is an apocalyptic number.

143942052 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

143942052 is an abundant number, since it is smaller than the sum of its proper divisors (204422748).

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

143942052 is a wasteful number, since it uses less digits than its factorization.

143942052 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1896 (or 1894 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 30.

The square root of 143942052 is about 11997.5852570424. The cubic root of 143942052 is about 524.0779607408.

The spelling of 143942052 in words is "one hundred forty-three million, nine hundred forty-two thousand, fifty-two".

Divisors: 1 2 3 4 6 12 31 62 93 124 186 239 372 478 717 956 1434 1619 2868 3238 4857 6476 7409 9714 14818 19428 22227 29636 44454 50189 88908 100378 150567 200756 301134 386941 602268 773882 1160823 1547764 2321646 4643292 11995171 23990342 35985513 47980684 71971026 143942052