75121072 has 20 divisors (see below), whose sum is σ = 156743440. Its totient is φ = 34671168.

The previous prime is 75121069. The next prime is 75121103. The reversal of 75121072 is 27012157.

It is a happy number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 180372 + ... + 180787.

It is an arithmetic number, because the mean of its divisors is an integer number (7837172).

Almost surely, 2^75121072 is an apocalyptic number.

It is an amenable number.

75121072 is an abundant number, since it is smaller than the sum of its proper divisors (81622368).

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

75121072 is a wasteful number, since it uses less digits than its factorization.

75121072 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 361180 (or 361174 counting only the distinct ones).

The product of its (nonzero) digits is 980, while the sum is 25.

The square root of 75121072 is about 8667.2413142822. The cubic root of 75121072 is about 421.9431352741.

The spelling of 75121072 in words is "seventy-five million, one hundred twenty-one thousand, seventy-two".