3942306642 has 16 divisors (see below), whose sum is σ = 8138956032. Its totient is φ = 1271711760.

The previous prime is 3942306631. The next prime is 3942306649. The reversal of 3942306642 is 2466032493.

It is a self number, because there is not a number n which added to its sum of digits gives 3942306642.

It is not an unprimeable number, because it can be changed into a prime (3942306649) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10597413 + ... + 10597784.

It is an arithmetic number, because the mean of its divisors is an integer number (508684752).

Almost surely, 2^3942306642 is an apocalyptic number.

3942306642 is an abundant number, since it is smaller than the sum of its proper divisors (4196649390).

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

3942306642 is a wasteful number, since it uses less digits than its factorization.

3942306642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21195233.

The product of its (nonzero) digits is 186624, while the sum is 39.

The square root of 3942306642 is about 62787.7905488002. The cubic root of 3942306642 is about 1579.7321879574.

The spelling of 3942306642 in words is "three billion, nine hundred forty-two million, three hundred six thousand, six hundred forty-two".