742208403421 has 4 divisors (see below), whose sum is σ = 742322754144. Its totient is φ = 742094052700.

The previous prime is 742208403413. The next prime is 742208403427. The reversal of 742208403421 is 124304802247.

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 742208403421 - 2³ = 742208403413 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (742208403427) 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, 57165625 + ... + 57178606.

It is an arithmetic number, because the mean of its divisors is an integer number (185580688536).

Almost surely, 2^742208403421 is an apocalyptic number.

It is an amenable number.

742208403421 is a deficient number, since it is larger than the sum of its proper divisors (114350723).

742208403421 is a wasteful number, since it uses less digits than its factorization.

742208403421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 114350722.

The product of its (nonzero) digits is 86016, while the sum is 37.

The spelling of 742208403421 in words is "seven hundred forty-two billion, two hundred eight million, four hundred three thousand, four hundred twenty-one".