75424007 has 4 divisors (see below), whose sum is σ = 76702440. Its totient is φ = 74145576.

The previous prime is 75424003. The next prime is 75424033. The reversal of 75424007 is 70042457.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 75424007 - 2² = 75424003 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (75424003) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 639128 + ... + 639245.

It is an arithmetic number, because the mean of its divisors is an integer number (19175610).

Almost surely, 2^75424007 is an apocalyptic number.

75424007 is a deficient number, since it is larger than the sum of its proper divisors (1278433).

75424007 is a wasteful number, since it uses less digits than its factorization.

75424007 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1278432.

The product of its (nonzero) digits is 7840, while the sum is 29.

The square root of 75424007 is about 8684.6995918109. The cubic root of 75424007 is about 422.5095538379.

The spelling of 75424007 in words is "seventy-five million, four hundred twenty-four thousand, seven".