75142905 has 8 divisors (see below), whose sum is σ = 120228672. Its totient is φ = 40076208.

The previous prime is 75142901. The next prime is 75142919. The reversal of 75142905 is 50924157.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 75142905 - 2² = 75142901 is a prime.

It is not an unprimeable number, because it can be changed into a prime (75142901) 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, 2504749 + ... + 2504778.

It is an arithmetic number, because the mean of its divisors is an integer number (15028584).

Almost surely, 2^75142905 is an apocalyptic number.

It is an amenable number.

75142905 is a deficient number, since it is larger than the sum of its proper divisors (45085767).

75142905 is a wasteful number, since it uses less digits than its factorization.

75142905 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5009535.

The product of its (nonzero) digits is 12600, while the sum is 33.

The square root of 75142905 is about 8668.5007354213. The cubic root of 75142905 is about 421.9840088128.

The spelling of 75142905 in words is "seventy-five million, one hundred forty-two thousand, nine hundred five".