354024420721 has 4 divisors (see below), whose sum is σ = 354141689200. Its totient is φ = 353907152244.

The previous prime is 354024420707. The next prime is 354024420767. The reversal of 354024420721 is 127024420453.

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 354024420721 - 2⁷ = 354024420593 is a prime.

It is a super-2 number, since 2×354024420721² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (354024420121) 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, 58629711 + ... + 58635748.

It is an arithmetic number, because the mean of its divisors is an integer number (88535422300).

Almost surely, 2^354024420721 is an apocalyptic number.

It is an amenable number.

354024420721 is a deficient number, since it is larger than the sum of its proper divisors (117268479).

354024420721 is a wasteful number, since it uses less digits than its factorization.

354024420721 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 117268478.

The product of its (nonzero) digits is 53760, while the sum is 34.

The spelling of 354024420721 in words is "three hundred fifty-four billion, twenty-four million, four hundred twenty thousand, seven hundred twenty-one".