42320455399 has 2 divisors, whose sum is σ = 42320455400. Its totient is φ = 42320455398.

The previous prime is 42320455381. The next prime is 42320455439. The reversal of 42320455399 is 99355402324.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 42320455399 - 2²⁵ = 42286900967 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42320455369) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21160227699 + 21160227700.

It is an arithmetic number, because the mean of its divisors is an integer number (21160227700).

Almost surely, 2^42320455399 is an apocalyptic number.

42320455399 is a deficient number, since it is larger than the sum of its proper divisors (1).

42320455399 is an equidigital number, since it uses as much as digits as its factorization.

42320455399 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1166400, while the sum is 46.

The spelling of 42320455399 in words is "forty-two billion, three hundred twenty million, four hundred fifty-five thousand, three hundred ninety-nine".