742397 has 4 divisors (see below), whose sum is σ = 755040. Its totient is φ = 729756.

The previous prime is 742393. The next prime is 742409. The reversal of 742397 is 793247.

It is a happy number.

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 a cyclic number.

It is not a de Polignac number, because 742397 - 2² = 742393 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (742393) 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, 6233 + ... + 6350.

It is an arithmetic number, because the mean of its divisors is an integer number (188760).

2⁷⁴²³⁹⁷ is an apocalyptic number.

It is an amenable number.

742397 is a deficient number, since it is larger than the sum of its proper divisors (12643).

742397 is a wasteful number, since it uses less digits than its factorization.

742397 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12642.

The product of its digits is 10584, while the sum is 32.

The square root of 742397 is about 861.6246282460. The cubic root of 742397 is about 90.5479737101.

The spelling of 742397 in words is "seven hundred forty-two thousand, three hundred ninety-seven".