742092321921 has 4 divisors (see below), whose sum is σ = 989456429232. Its totient is φ = 494728214612.

The previous prime is 742092321911. The next prime is 742092321941. The reversal of 742092321921 is 129123290247.

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 742092321921 - 2¹⁰ = 742092320897 is a prime.

It is not an unprimeable number, because it can be changed into a prime (742092321911) 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, 123682053651 + ... + 123682053656.

It is an arithmetic number, because the mean of its divisors is an integer number (247364107308).

Almost surely, 2^742092321921 is an apocalyptic number.

It is an amenable number.

742092321921 is a deficient number, since it is larger than the sum of its proper divisors (247364107311).

742092321921 is a wasteful number, since it uses less digits than its factorization.

742092321921 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 247364107310.

The product of its (nonzero) digits is 108864, while the sum is 42.

The spelling of 742092321921 in words is "seven hundred forty-two billion, ninety-two million, three hundred twenty-one thousand, nine hundred twenty-one".