42415624 has 8 divisors (see below), whose sum is σ = 79529310. Its totient is φ = 21207808.

The previous prime is 42415601. The next prime is 42415627. The reversal of 42415624 is 42651424.

It can be written as a sum of positive squares in only one way, i.e., 27899524 + 14516100 = 5282^2 + 3810^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a hoax number, since the sum of its digits (28) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 42415592 and 42415601.

It is not an unprimeable number, because it can be changed into a prime (42415627) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2650969 + ... + 2650984.

Almost surely, 2^42415624 is an apocalyptic number.

It is an amenable number.

42415624 is a deficient number, since it is larger than the sum of its proper divisors (37113686).

42415624 is a wasteful number, since it uses less digits than its factorization.

42415624 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5301959 (or 5301955 counting only the distinct ones).

The product of its digits is 7680, while the sum is 28.

The square root of 42415624 is about 6512.7278463022. The cubic root of 42415624 is about 348.7455062091.

The spelling of 42415624 in words is "forty-two million, four hundred fifteen thousand, six hundred twenty-four".