42047472 has 40 divisors (see below), whose sum is σ = 108899280. Its totient is φ = 13980160.

The previous prime is 42047459. The next prime is 42047479. The reversal of 42047472 is 27474024.

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 a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42047479) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 23572 + ... + 25292.

It is an arithmetic number, because the mean of its divisors is an integer number (2722482).

Almost surely, 2^42047472 is an apocalyptic number.

It is an amenable number.

42047472 is an abundant number, since it is smaller than the sum of its proper divisors (66851808).

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

42047472 is a wasteful number, since it uses less digits than its factorization.

42047472 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2241 (or 2235 counting only the distinct ones).

The product of its (nonzero) digits is 12544, while the sum is 30.

The square root of 42047472 is about 6484.4022083767. The cubic root of 42047472 is about 347.7335786195.

The spelling of 42047472 in words is "forty-two million, forty-seven thousand, four hundred seventy-two".