424087347721 has 2 divisors, whose sum is σ = 424087347722. Its totient is φ = 424087347720.

The previous prime is 424087347701. The next prime is 424087347757. The reversal of 424087347721 is 127743780424.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 399501107721 + 24586240000 = 632061^2 + 156800^2 .

It is a cyclic number.

It is not a de Polignac number, because 424087347721 - 2³⁵ = 389727609353 is a prime.

It is not a weakly prime, because it can be changed into another prime (424087347701) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 212043673860 + 212043673861.

It is an arithmetic number, because the mean of its divisors is an integer number (212043673861).

Almost surely, 2^424087347721 is an apocalyptic number.

It is an amenable number.

424087347721 is a deficient number, since it is larger than the sum of its proper divisors (1).

424087347721 is an equidigital number, since it uses as much as digits as its factorization.

424087347721 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2107392, while the sum is 49.

The spelling of 424087347721 in words is "four hundred twenty-four billion, eighty-seven million, three hundred forty-seven thousand, seven hundred twenty-one".