756742743 has 30 divisors (see below), whose sum is σ = 1200888216. Its totient is φ = 474804288.

The previous prime is 756742667. The next prime is 756742769. The reversal of 756742743 is 347247657.

756742743 is a `hidden beast` number, since 7 + 567 + 42 + 7 + 43 = 666.

It is a de Polignac number, because none of the positive numbers 2^k-756742743 is a prime.

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (756742783) by changing a digit.

It is a polite number, since it can be written in 29 ways as a sum of consecutive naturals, for example, 7246 + ... + 39572.

Almost surely, 2^756742743 is an apocalyptic number.

756742743 is a deficient number, since it is larger than the sum of its proper divisors (444145473).

756742743 is a wasteful number, since it uses less digits than its factorization.

756742743 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32373 (or 32347 counting only the distinct ones).

The product of its digits is 987840, while the sum is 45.

The square root of 756742743 is about 27508.9575047838. The cubic root of 756742743 is about 911.2749279367.

The spelling of 756742743 in words is "seven hundred fifty-six million, seven hundred forty-two thousand, seven hundred forty-three".