7856264042 has 12 divisors (see below), whose sum is σ = 12953096898. Its totient is φ = 3571029000.

The previous prime is 7856264029. The next prime is 7856264047. The reversal of 7856264042 is 2404626587.

It can be written as a sum of positive squares in only one way, i.e., 7784709361 + 71554681 = 88231^2 + 8459^2 .

It is a junction number, because it is equal to n+sod(n) for n = 7856263984 and 7856264002.

It is not an unprimeable number, because it can be changed into a prime (7856264047) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 16231709 + ... + 16232192.

Almost surely, 2^7856264042 is an apocalyptic number.

7856264042 is a deficient number, since it is larger than the sum of its proper divisors (5096832856).

7856264042 is a wasteful number, since it uses less digits than its factorization.

7856264042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32463925 (or 32463914 counting only the distinct ones).

The product of its (nonzero) digits is 645120, while the sum is 44.

The square root of 7856264042 is about 88635.5687182070. The cubic root of 7856264042 is about 1987.9495425619.

The spelling of 7856264042 in words is "seven billion, eight hundred fifty-six million, two hundred sixty-four thousand, forty-two".