742769 has 4 divisors (see below), whose sum is σ = 747840. Its totient is φ = 737700.

The previous prime is 742759. The next prime is 742783. The reversal of 742769 is 967247.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 967247 = 227 ⋅4261.

It is a cyclic number.

It is not a de Polignac number, because 742769 - 2⁸ = 742513 is a prime.

It is a super-2 number, since 2×742769² = 1103411574722, which contains 22 as substring.

It is an Ulam number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (742759) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2309 + ... + 2610.

It is an arithmetic number, because the mean of its divisors is an integer number (186960).

2⁷⁴²⁷⁶⁹ is an apocalyptic number.

It is an amenable number.

742769 is a deficient number, since it is larger than the sum of its proper divisors (5071).

742769 is a wasteful number, since it uses less digits than its factorization.

742769 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5070.

The product of its digits is 21168, while the sum is 35.

The square root of 742769 is about 861.8404724774. The cubic root of 742769 is about 90.5630950992.

The spelling of 742769 in words is "seven hundred forty-two thousand, seven hundred sixty-nine".