42147532 has 24 divisors (see below), whose sum is σ = 86091264. Its totient is φ = 17678352.

The previous prime is 42147509. The next prime is 42147541. The reversal of 42147532 is 23574124.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a self number, because there is not a number n which added to its sum of digits gives 42147532.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14698 + ... + 17329.

It is an arithmetic number, because the mean of its divisors is an integer number (3587136).

Almost surely, 2^42147532 is an apocalyptic number.

It is an amenable number.

42147532 is an abundant number, since it is smaller than the sum of its proper divisors (43943732).

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

42147532 is a wasteful number, since it uses less digits than its factorization.

42147532 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32085 (or 32083 counting only the distinct ones).

The product of its digits is 6720, while the sum is 28.

The square root of 42147532 is about 6492.1130612459. The cubic root of 42147532 is about 348.0091929575.

The spelling of 42147532 in words is "forty-two million, one hundred forty-seven thousand, five hundred thirty-two".