42147252 has 54 divisors (see below), whose sum is σ = 123938178. Its totient is φ = 12041568.

The previous prime is 42147251. The next prime is 42147269. The reversal of 42147252 is 25274124.

It can be written as a sum of positive squares in only one way, i.e., 41293476 + 853776 = 6426^2 + 924^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42147251) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 10183 + ... + 13710.

Almost surely, 2^42147252 is an apocalyptic number.

42147252 is a gapful number since it is divisible by the number (42) formed by its first and last digit.

It is an amenable number.

42147252 is an abundant number, since it is smaller than the sum of its proper divisors (81790926).

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

42147252 is a wasteful number, since it uses less digits than its factorization.

42147252 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23917 (or 23905 counting only the distinct ones).

The product of its digits is 4480, while the sum is 27.

The square root of 42147252 is about 6492.0914965826. The cubic root of 42147252 is about 348.0084223090.

The spelling of 42147252 in words is "forty-two million, one hundred forty-seven thousand, two hundred fifty-two".