749159123 has 4 divisors (see below), whose sum is σ = 752293920. Its totient is φ = 746024328.

The previous prime is 749159119. The next prime is 749159129. The reversal of 749159123 is 321951947.

749159123 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 321951947 = 10433 ⋅30859.

It is a cyclic number.

It is not a de Polignac number, because 749159123 - 2² = 749159119 is a prime.

It is a super-2 number, since 2×749159123² = 1122478783148258258, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (749159129) 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, 1567040 + ... + 1567517.

It is an arithmetic number, because the mean of its divisors is an integer number (188073480).

Almost surely, 2^749159123 is an apocalyptic number.

749159123 is a deficient number, since it is larger than the sum of its proper divisors (3134797).

749159123 is a wasteful number, since it uses less digits than its factorization.

749159123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3134796.

The product of its digits is 68040, while the sum is 41.

The square root of 749159123 is about 27370.7713263620. The cubic root of 749159123 is about 908.2206194587.

The spelling of 749159123 in words is "seven hundred forty-nine million, one hundred fifty-nine thousand, one hundred twenty-three".