42436407 has 12 divisors (see below), whose sum is σ = 61269864. Its totient is φ = 26114400.

The previous prime is 42436397. The next prime is 42436409. The reversal of 42436407 is 70463424.

It is not a de Polignac number, because 42436407 - 2⁶ = 42436343 is a prime.

It is a Smith number, since the sum of its digits (30) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42436409) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 41344 + ... + 42357.

It is an arithmetic number, because the mean of its divisors is an integer number (5105822).

Almost surely, 2^42436407 is an apocalyptic number.

42436407 is a deficient number, since it is larger than the sum of its proper divisors (18833457).

42436407 is a wasteful number, since it uses less digits than its factorization.

42436407 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 83730 (or 83717 counting only the distinct ones).

The product of its (nonzero) digits is 16128, while the sum is 30.

The square root of 42436407 is about 6514.3232188770. The cubic root of 42436407 is about 348.8024568773.

The spelling of 42436407 in words is "forty-two million, four hundred thirty-six thousand, four hundred seven".