42391356 has 48 divisors (see below), whose sum is σ = 118997760. Its totient is φ = 11473920.

The previous prime is 42391339. The next prime is 42391373. The reversal of 42391356 is 65319324.

It is an interprime number because it is at equal distance from previous prime (42391339) and next prime (42391373).

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, 11685 + ... + 14876.

It is an arithmetic number, because the mean of its divisors is an integer number (2479120).

Almost surely, 2^42391356 is an apocalyptic number.

It is an amenable number.

42391356 is an abundant number, since it is smaller than the sum of its proper divisors (76606404).

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

42391356 is a wasteful number, since it uses less digits than its factorization.

42391356 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26594 (or 26592 counting only the distinct ones).

The product of its digits is 19440, while the sum is 33.

The square root of 42391356 is about 6510.8644587336. The cubic root of 42391356 is about 348.6789822120.

The spelling of 42391356 in words is "forty-two million, three hundred ninety-one thousand, three hundred fifty-six".