3942169056 has 144 divisors (see below), whose sum is σ = 13254040800. Its totient is φ = 1087478784.

The previous prime is 3942169043. The next prime is 3942169057. The reversal of 3942169056 is 6509612493.

It is a tau number, because it is divible by the number of its divisors (144).

It is a super-2 number, since 2×3942169056² = 31081393732167862272, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3942169057) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 24750 + ... + 92178.

It is an arithmetic number, because the mean of its divisors is an integer number (92041950).

Almost surely, 2^3942169056 is an apocalyptic number.

3942169056 is a gapful number since it is divisible by the number (36) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3942169056, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (6627020400).

3942169056 is an abundant number, since it is smaller than the sum of its proper divisors (9311871744).

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

3942169056 is a wasteful number, since it uses less digits than its factorization.

3942169056 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67481 (or 67470 counting only the distinct ones).

The product of its (nonzero) digits is 349920, while the sum is 45.

The square root of 3942169056 is about 62786.6948962915. The cubic root of 3942169056 is about 1579.7138102595.

The spelling of 3942169056 in words is "three billion, nine hundred forty-two million, one hundred sixty-nine thousand, fifty-six".