7985454042 has 16 divisors (see below), whose sum is σ = 16665295680. Its totient is φ = 2546086752.

The previous prime is 7985454041. The next prime is 7985454049. The reversal of 7985454042 is 2404545897.

It is a junction number, because it is equal to n+sod(n) for n = 7985453982 and 7985454000.

It is not an unprimeable number, because it can be changed into a prime (7985454041) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 28932667 + ... + 28932942.

It is an arithmetic number, because the mean of its divisors is an integer number (1041580980).

Almost surely, 2^7985454042 is an apocalyptic number.

7985454042 is an abundant number, since it is smaller than the sum of its proper divisors (8679841638).

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

7985454042 is a wasteful number, since it uses less digits than its factorization.

7985454042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57865637.

The product of its (nonzero) digits is 1612800, while the sum is 48.

The square root of 7985454042 is about 89361.3677267755. The cubic root of 7985454042 is about 1998.7871014205.

The spelling of 7985454042 in words is "seven billion, nine hundred eighty-five million, four hundred fifty-four thousand, forty-two".