75129402 has 16 divisors (see below), whose sum is σ = 151129440. Its totient is φ = 24898032.

The previous prime is 75129391. The next prime is 75129433. The reversal of 75129402 is 20492157.

It is a self number, because there is not a number n which added to its sum of digits gives 75129402.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 35152 + ... + 37227.

It is an arithmetic number, because the mean of its divisors is an integer number (9445590).

Almost surely, 2^75129402 is an apocalyptic number.

75129402 is an abundant number, since it is smaller than the sum of its proper divisors (76000038).

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

75129402 is a wasteful number, since it uses less digits than its factorization.

75129402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72557.

The product of its (nonzero) digits is 5040, while the sum is 30.

The square root of 75129402 is about 8667.7218460216. The cubic root of 75129402 is about 421.9587307935.

The spelling of 75129402 in words is "seventy-five million, one hundred twenty-nine thousand, four hundred two".