42015213 has 16 divisors (see below), whose sum is σ = 65521600. Its totient is φ = 26535600.

The previous prime is 42015179. The next prime is 42015247. The reversal of 42015213 is 31251024.

It is an interprime number because it is at equal distance from previous prime (42015179) and next prime (42015247).

It is not a de Polignac number, because 42015213 - 2⁸ = 42014957 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42015263) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 40438 + ... + 41463.

It is an arithmetic number, because the mean of its divisors is an integer number (4095100).

Almost surely, 2^42015213 is an apocalyptic number.

It is an amenable number.

42015213 is a deficient number, since it is larger than the sum of its proper divisors (23506387).

42015213 is a wasteful number, since it uses less digits than its factorization.

42015213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81929 (or 81923 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 18.

The square root of 42015213 is about 6481.9143005751. The cubic root of 42015213 is about 347.6446283060.

Adding to 42015213 its reverse (31251024), we get a palindrome (73266237).

The spelling of 42015213 in words is "forty-two million, fifteen thousand, two hundred thirteen".