42979356 has 96 divisors (see below), whose sum is σ = 128576000. Its totient is φ = 12161664.

The previous prime is 42979301. The next prime is 42979367. The reversal of 42979356 is 65397924.

It is a happy number.

42979356 is a `hidden beast` number, since 4 + 297 + 9 + 356 = 666.

Its product of digits (408240) is a multiple of the sum of its prime divisors (560).

It is a nialpdrome in base 9.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 104880 + ... + 105288.

Almost surely, 2^42979356 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 42979356, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (64288000).

42979356 is an abundant number, since it is smaller than the sum of its proper divisors (85596644).

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

42979356 is a wasteful number, since it uses less digits than its factorization.

42979356 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 568 (or 560 counting only the distinct ones).

The product of its digits is 408240, while the sum is 45.

The square root of 42979356 is about 6555.8642450862. The cubic root of 42979356 is about 350.2837318319.

The spelling of 42979356 in words is "forty-two million, nine hundred seventy-nine thousand, three hundred fifty-six".