42881215 has 24 divisors (see below), whose sum is σ = 57552768. Its totient is φ = 30625920.

The previous prime is 42881207. The next prime is 42881239. The reversal of 42881215 is 51218824.

It is not a de Polignac number, because 42881215 - 2³ = 42881207 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (31).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 25377 + ... + 27013.

It is an arithmetic number, because the mean of its divisors is an integer number (2398032).

Almost surely, 2^42881215 is an apocalyptic number.

42881215 is a deficient number, since it is larger than the sum of its proper divisors (14671553).

42881215 is a wasteful number, since it uses less digits than its factorization.

42881215 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1699 (or 1686 counting only the distinct ones).

The product of its digits is 5120, while the sum is 31.

The square root of 42881215 is about 6548.3749892626. The cubic root of 42881215 is about 350.0169107475.

The spelling of 42881215 in words is "forty-two million, eight hundred eighty-one thousand, two hundred fifteen".