742737 has 4 divisors (see below), whose sum is σ = 990320. Its totient is φ = 495156.

The previous prime is 742723. The next prime is 742757. The reversal of 742737 is 737247.

It is a happy number.

742737 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 a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 742737 - 2⁶ = 742673 is a prime.

It is a D-number.

It is a Duffinian number.

742737 is a lucky number.

It is a nialpdrome in base 16.

It is not an unprimeable number, because it can be changed into a prime (742717) 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, 123787 + ... + 123792.

It is an arithmetic number, because the mean of its divisors is an integer number (247580).

2⁷⁴²⁷³⁷ is an apocalyptic number.

It is an amenable number.

742737 is a deficient number, since it is larger than the sum of its proper divisors (247583).

742737 is a wasteful number, since it uses less digits than its factorization.

742737 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 247582.

The product of its digits is 8232, while the sum is 30.

The square root of 742737 is about 861.8219073567. The cubic root of 742737 is about 90.5617945331.

The spelling of 742737 in words is "seven hundred forty-two thousand, seven hundred thirty-seven".