42399376 has 20 divisors (see below), whose sum is σ = 84060592. Its totient is φ = 20706336.

The previous prime is 42399361. The next prime is 42399389. The reversal of 42399376 is 67399324.

It is a Harshad number since it is a multiple of its sum of digits (43).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 30126 + ... + 31501.

Almost surely, 2^42399376 is an apocalyptic number.

It is an amenable number.

42399376 is a deficient number, since it is larger than the sum of its proper divisors (41661216).

42399376 is a wasteful number, since it uses less digits than its factorization.

42399376 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61678 (or 61672 counting only the distinct ones).

The product of its digits is 244944, while the sum is 43.

The square root of 42399376 is about 6511.4803232445. The cubic root of 42399376 is about 348.7009696277.

It can be divided in two parts, 423 and 99376, that added together give a palindrome (99799).

The spelling of 42399376 in words is "forty-two million, three hundred ninety-nine thousand, three hundred seventy-six".