754432139 has 4 divisors (see below), whose sum is σ = 754578480. Its totient is φ = 754285800.

The previous prime is 754432121. The next prime is 754432153. The reversal of 754432139 is 931234457.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 754432139 - 2⁸ = 754431883 is a prime.

It is a super-2 number, since 2×754432139² = 1138335704712230642, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (754432169) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 65144 + ... + 75845.

It is an arithmetic number, because the mean of its divisors is an integer number (188644620).

Almost surely, 2^754432139 is an apocalyptic number.

754432139 is a deficient number, since it is larger than the sum of its proper divisors (146341).

754432139 is a wasteful number, since it uses less digits than its factorization.

754432139 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 146340.

The product of its digits is 90720, while the sum is 38.

The square root of 754432139 is about 27466.9280954387. The cubic root of 754432139 is about 910.3465004981.

The spelling of 754432139 in words is "seven hundred fifty-four million, four hundred thirty-two thousand, one hundred thirty-nine".