42291372 has 12 divisors (see below), whose sum is σ = 98679896. Its totient is φ = 14097120.

The previous prime is 42291371. The next prime is 42291383. The reversal of 42291372 is 27319224.

It is a tau number, because it is divible by the number of its divisors (12).

It is a hoax number, since the sum of its digits (30) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (42291371) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1762129 + ... + 1762152.

Almost surely, 2^42291372 is an apocalyptic number.

It is an amenable number.

42291372 is an abundant number, since it is smaller than the sum of its proper divisors (56388524).

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

42291372 is a wasteful number, since it uses less digits than its factorization.

42291372 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3524288 (or 3524286 counting only the distinct ones).

The product of its digits is 6048, while the sum is 30.

The square root of 42291372 is about 6503.1816828380. The cubic root of 42291372 is about 348.4046356839.

The spelling of 42291372 in words is "forty-two million, two hundred ninety-one thousand, three hundred seventy-two".