75420424 has 16 divisors (see below), whose sum is σ = 148856400. Its totient is φ = 35725392.

The previous prime is 75420421. The next prime is 75420439. The reversal of 75420424 is 42402457.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 75420392 and 75420401.

It is not an unprimeable number, because it can be changed into a prime (75420421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 247942 + ... + 248245.

It is an arithmetic number, because the mean of its divisors is an integer number (9303525).

Almost surely, 2^75420424 is an apocalyptic number.

It is an amenable number.

75420424 is a deficient number, since it is larger than the sum of its proper divisors (73435976).

75420424 is a wasteful number, since it uses less digits than its factorization.

75420424 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 496212 (or 496208 counting only the distinct ones).

The product of its (nonzero) digits is 8960, while the sum is 28.

The square root of 75420424 is about 8684.4933070387. The cubic root of 75420424 is about 422.5028633257.

The spelling of 75420424 in words is "seventy-five million, four hundred twenty thousand, four hundred twenty-four".