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42631723980 = 2234526315879
BaseRepresentation
bin100111101101000011…
…000111101111001100
311002001002002222010000
4213231003013233030
51144302210131410
631330145444300
73036311450316
oct475503075714
9132032088100
1042631723980
111709755123a
128319340690
1340353820a1
1420c5d0a7b6
151197a81dc0
hex9ed0c7bcc

42631723980 has 60 divisors (see below), whose sum is σ = 133737302160. Its totient is φ = 11368459296.

The previous prime is 42631723969. The next prime is 42631724011. The reversal of 42631723980 is 8932713624.

42631723980 is a `hidden beast` number, since 4 + 2 + 631 + 7 + 2 + 3 + 9 + 8 + 0 = 666.

It is a tau number, because it is divible by the number of its divisors (60).

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 13156320 + ... + 13159559.

It is an arithmetic number, because the mean of its divisors is an integer number (2228955036).

Almost surely, 242631723980 is an apocalyptic number.

It is an amenable number.

42631723980 is an abundant number, since it is smaller than the sum of its proper divisors (91105578180).

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

42631723980 is a wasteful number, since it uses less digits than its factorization.

42631723980 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26315900 (or 26315889 counting only the distinct ones).

The product of its (nonzero) digits is 435456, while the sum is 45.

The spelling of 42631723980 in words is "forty-two billion, six hundred thirty-one million, seven hundred twenty-three thousand, nine hundred eighty".

Divisors: 1 2 3 4 5 6 9 10 12 15 18 20 27 30 36 45 54 60 81 90 108 135 162 180 270 324 405 540 810 1620 26315879 52631758 78947637 105263516 131579395 157895274 236842911 263158790 315790548 394738185 473685822 526317580 710528733 789476370 947371644 1184214555 1421057466 1578952740 2131586199 2368429110 2842114932 3552643665 4263172398 4736858220 7105287330 8526344796 10657930995 14210574660 21315861990 42631723980