3215855142 has 32 divisors (see below), whose sum is σ = 7155064800. Its totient is φ = 1070643744.

The previous prime is 3215855113. The next prime is 3215855143. The reversal of 3215855142 is 2415585123.

3215855142 is a `hidden beast` number, since 3 + 21 + 585 + 51 + 4 + 2 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 3215855097 and 3215855106.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3215855143) 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, 8848 + ... + 80684.

It is an arithmetic number, because the mean of its divisors is an integer number (223595775).

Almost surely, 2^3215855142 is an apocalyptic number.

3215855142 is an abundant number, since it is smaller than the sum of its proper divisors (3939209658).

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

3215855142 is a wasteful number, since it uses less digits than its factorization.

3215855142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72677 (or 72671 counting only the distinct ones).

The product of its digits is 48000, while the sum is 36.

The square root of 3215855142 is about 56708.5103137086. The cubic root of 3215855142 is about 1476.0423760059.

The spelling of 3215855142 in words is "three billion, two hundred fifteen million, eight hundred fifty-five thousand, one hundred forty-two".