75423120 has 40 divisors (see below), whose sum is σ = 233812416. Its totient is φ = 20112768.

The previous prime is 75423107. The next prime is 75423121. The reversal of 75423120 is 2132457.

It is a tau number, because it is divible by the number of its divisors (40).

It is a Harshad number since it is a multiple of its sum of digits (24).

It is not an unprimeable number, because it can be changed into a prime (75423121) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 156892 + ... + 157371.

Almost surely, 2^75423120 is an apocalyptic number.

It is an amenable number.

75423120 is an abundant number, since it is smaller than the sum of its proper divisors (158389296).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

75423120 is a wasteful number, since it uses less digits than its factorization.

75423120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 314279 (or 314273 counting only the distinct ones).

The product of its (nonzero) digits is 1680, while the sum is 24.

The square root of 75423120 is about 8684.6485248397. The cubic root of 75423120 is about 422.5078975684.

Adding to 75423120 its reverse (2132457), we get a palindrome (77555577).

The spelling of 75423120 in words is "seventy-five million, four hundred twenty-three thousand, one hundred twenty".