442432419857 has 2 divisors, whose sum is σ = 442432419858. Its totient is φ = 442432419856.

The previous prime is 442432419823. The next prime is 442432419881. The reversal of 442432419857 is 758914234244.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 262078468096 + 180353951761 = 511936^2 + 424681^2 .

It is a cyclic number.

It is not a de Polignac number, because 442432419857 - 2⁸ = 442432419601 is a prime.

It is a super-2 number, since 2×442432419857² (a number of 24 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 442432419799 and 442432419808.

It is not a weakly prime, because it can be changed into another prime (442432449857) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 221216209928 + 221216209929.

It is an arithmetic number, because the mean of its divisors is an integer number (221216209929).

Almost surely, 2^442432419857 is an apocalyptic number.

It is an amenable number.

442432419857 is a deficient number, since it is larger than the sum of its proper divisors (1).

442432419857 is an equidigital number, since it uses as much as digits as its factorization.

442432419857 is an evil number, because the sum of its binary digits is even.

The product of its digits is 7741440, while the sum is 53.

The spelling of 442432419857 in words is "four hundred forty-two billion, four hundred thirty-two million, four hundred nineteen thousand, eight hundred fifty-seven".