42400075 has 12 divisors (see below), whose sum is σ = 52664040. Its totient is φ = 33863360.

The previous prime is 42400069. The next prime is 42400081. The reversal of 42400075 is 57000424.

It is an interprime number because it is at equal distance from previous prime (42400069) and next prime (42400081).

It is not a de Polignac number, because 42400075 - 2³ = 42400067 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 20436 + ... + 22414.

It is an arithmetic number, because the mean of its divisors is an integer number (4388670).

Almost surely, 2^42400075 is an apocalyptic number.

42400075 is a deficient number, since it is larger than the sum of its proper divisors (10263965).

42400075 is a wasteful number, since it uses less digits than its factorization.

42400075 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2846 (or 2841 counting only the distinct ones).

The product of its (nonzero) digits is 1120, while the sum is 22.

The square root of 42400075 is about 6511.5339974541. The cubic root of 42400075 is about 348.7028858559.

Adding to 42400075 its reverse (57000424), we get a palindrome (99400499).

The spelling of 42400075 in words is "forty-two million, four hundred thousand, seventy-five".