75143139 has 16 divisors (see below), whose sum is σ = 104819712. Its totient is φ = 47792448.

The previous prime is 75143099. The next prime is 75143143. The reversal of 75143139 is 93134157.

It is not a de Polignac number, because 75143139 - 2¹¹ = 75141091 is a prime.

It is not an unprimeable number, because it can be changed into a prime (75143149) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 30342 + ... + 32724.

It is an arithmetic number, because the mean of its divisors is an integer number (6551232).

Almost surely, 2^75143139 is an apocalyptic number.

75143139 is a deficient number, since it is larger than the sum of its proper divisors (29676573).

75143139 is a wasteful number, since it uses less digits than its factorization.

75143139 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2866.

The product of its digits is 11340, while the sum is 33.

The square root of 75143139 is about 8668.5142325545. The cubic root of 75143139 is about 421.9844468411.

The spelling of 75143139 in words is "seventy-five million, one hundred forty-three thousand, one hundred thirty-nine".