3942157542 has 32 divisors (see below), whose sum is σ = 8326257408. Its totient is φ = 1241772576.

The previous prime is 3942157529. The next prime is 3942157559. The reversal of 3942157542 is 2457512493.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 3942157494 and 3942157503.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 160633 + ... + 183540.

It is an arithmetic number, because the mean of its divisors is an integer number (260195544).

Almost surely, 2^3942157542 is an apocalyptic number.

3942157542 is an abundant number, since it is smaller than the sum of its proper divisors (4384099866).

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

3942157542 is a wasteful number, since it uses less digits than its factorization.

3942157542 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 344284.

The product of its digits is 302400, while the sum is 42.

The square root of 3942157542 is about 62786.6032048239. The cubic root of 3942157542 is about 1579.7122722871.

The spelling of 3942157542 in words is "three billion, nine hundred forty-two million, one hundred fifty-seven thousand, five hundred forty-two".