3942431280 has 120 divisors (see below), whose sum is σ = 13251317040. Its totient is φ = 1050416640.

The previous prime is 3942431267. The next prime is 3942431323. The reversal of 3942431280 is 821342493.

3942431280 is a `hidden beast` number, since 394 + 243 + 1 + 28 + 0 = 666.

It is a tau number, because it is divible by the number of its divisors (120).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1682910 + ... + 1685250.

It is an arithmetic number, because the mean of its divisors is an integer number (110427642).

Almost surely, 2^3942431280 is an apocalyptic number.

3942431280 is a gapful number since it is divisible by the number (30) 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 3942431280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (6625658520).

3942431280 is an abundant number, since it is smaller than the sum of its proper divisors (9308885760).

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

3942431280 is a wasteful number, since it uses less digits than its factorization.

3942431280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4699 (or 4690 counting only the distinct ones).

The product of its (nonzero) digits is 41472, while the sum is 36.

The square root of 3942431280 is about 62788.7830746862. The cubic root of 3942431280 is about 1579.7488357902.

The spelling of 3942431280 in words is "three billion, nine hundred forty-two million, four hundred thirty-one thousand, two hundred eighty".