42732215 has 4 divisors (see below), whose sum is σ = 51278664. Its totient is φ = 34185768.

The previous prime is 42732181. The next prime is 42732227. The reversal of 42732215 is 51223724.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 42732215 - 2²² = 38537911 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4273217 + ... + 4273226.

It is an arithmetic number, because the mean of its divisors is an integer number (12819666).

Almost surely, 2^42732215 is an apocalyptic number.

42732215 is a deficient number, since it is larger than the sum of its proper divisors (8546449).

42732215 is an equidigital number, since it uses as much as digits as its factorization.

42732215 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8546448.

The product of its digits is 3360, while the sum is 26.

The square root of 42732215 is about 6536.9882208858. The cubic root of 42732215 is about 349.6110372850.

Adding to 42732215 its reverse (51223724), we get a palindrome (93955939).

The spelling of 42732215 in words is "forty-two million, seven hundred thirty-two thousand, two hundred fifteen".