42992415 has 24 divisors (see below), whose sum is σ = 75787920. Its totient is φ = 22539264.

The previous prime is 42992407. The next prime is 42992419. The reversal of 42992415 is 51429924.

It is not a de Polignac number, because 42992415 - 2³ = 42992407 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 42992415.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42992419) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 5442 + ... + 10751.

It is an arithmetic number, because the mean of its divisors is an integer number (3157830).

Almost surely, 2^42992415 is an apocalyptic number.

42992415 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

42992415 is a deficient number, since it is larger than the sum of its proper divisors (32795505).

42992415 is a wasteful number, since it uses less digits than its factorization.

42992415 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16263 (or 16260 counting only the distinct ones).

The product of its digits is 25920, while the sum is 36.

The square root of 42992415 is about 6556.8601479672. The cubic root of 42992415 is about 350.3192053899.

The spelling of 42992415 in words is "forty-two million, nine hundred ninety-two thousand, four hundred fifteen".