742775 has 24 divisors (see below), whose sum is σ = 1046064. Its totient is φ = 518400.

The previous prime is 742759. The next prime is 742783. The reversal of 742775 is 577247.

It is a happy number.

It is not a de Polignac number, because 742775 - 2⁴ = 742759 is a prime.

It is a Smith number, since the sum of its digits (32) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 10139 + ... + 10211.

It is an arithmetic number, because the mean of its divisors is an integer number (43586).

2⁷⁴²⁷⁷⁵ is an apocalyptic number.

742775 is a deficient number, since it is larger than the sum of its proper divisors (303289).

742775 is a wasteful number, since it uses less digits than its factorization.

742775 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 131 (or 126 counting only the distinct ones).

The product of its digits is 13720, while the sum is 32.

The square root of 742775 is about 861.8439533930. The cubic root of 742775 is about 90.5633389512.

The spelling of 742775 in words is "seven hundred forty-two thousand, seven hundred seventy-five".