42213537 has 12 divisors (see below), whose sum is σ = 62942464. Its totient is φ = 27234360.

The previous prime is 42213517. The next prime is 42213553. The reversal of 42213537 is 73531224.

It is not a de Polignac number, because 42213537 - 2¹² = 42209441 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 42213537.

It is not an unprimeable number, because it can be changed into a prime (42213517) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 75373 + ... + 75930.

Almost surely, 2^42213537 is an apocalyptic number.

It is an amenable number.

42213537 is a deficient number, since it is larger than the sum of its proper divisors (20728927).

42213537 is a wasteful number, since it uses less digits than its factorization.

42213537 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 151340 (or 151337 counting only the distinct ones).

The product of its digits is 5040, while the sum is 27.

The square root of 42213537 is about 6497.1945484186. The cubic root of 42213537 is about 348.1907644140.

The spelling of 42213537 in words is "forty-two million, two hundred thirteen thousand, five hundred thirty-seven".