742566401 has 4 divisors (see below), whose sum is σ = 742739904. Its totient is φ = 742392900.

The previous prime is 742566347. The next prime is 742566403. The reversal of 742566401 is 104665247.

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 742566401 - 2⁶ = 742566337 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (742566403) 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, 80165 + ... + 88946.

It is an arithmetic number, because the mean of its divisors is an integer number (185684976).

Almost surely, 2^742566401 is an apocalyptic number.

It is an amenable number.

742566401 is a deficient number, since it is larger than the sum of its proper divisors (173503).

742566401 is a wasteful number, since it uses less digits than its factorization.

742566401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 173502.

The product of its (nonzero) digits is 40320, while the sum is 35.

The square root of 742566401 is about 27250.0715778876. The cubic root of 742566401 is about 905.5486029992.

The spelling of 742566401 in words is "seven hundred forty-two million, five hundred sixty-six thousand, four hundred one".