75075129 has 12 divisors (see below), whose sum is σ = 108517396. Its totient is φ = 50015232.

The previous prime is 75075127. The next prime is 75075173. The reversal of 75075129 is 92157057.

It can be written as a sum of positive squares in 2 ways, for example, as 57836025 + 17239104 = 7605^2 + 4152^2 .

It is not a de Polignac number, because 75075129 - 2¹ = 75075127 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 75075093 and 75075102.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (75075127) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 21729 + ... + 24945.

Almost surely, 2^75075129 is an apocalyptic number.

It is an amenable number.

75075129 is a deficient number, since it is larger than the sum of its proper divisors (33442267).

75075129 is a wasteful number, since it uses less digits than its factorization.

75075129 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5816 (or 5813 counting only the distinct ones).

The product of its (nonzero) digits is 22050, while the sum is 36.

The square root of 75075129 is about 8664.5905269666. The cubic root of 75075129 is about 421.8570995532.

The spelling of 75075129 in words is "seventy-five million, seventy-five thousand, one hundred twenty-nine".