42957280369 has 2 divisors, whose sum is σ = 42957280370. Its totient is φ = 42957280368.

The previous prime is 42957280321. The next prime is 42957280381. The reversal of 42957280369 is 96308275924.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 42722823025 + 234457344 = 206695^2 + 15312^2 .

It is a cyclic number.

It is not a de Polignac number, because 42957280369 - 2²¹ = 42955183217 is a prime.

It is a super-2 number, since 2×42957280369² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (42957280669) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21478640184 + 21478640185.

It is an arithmetic number, because the mean of its divisors is an integer number (21478640185).

Almost surely, 2^42957280369 is an apocalyptic number.

It is an amenable number.

42957280369 is a deficient number, since it is larger than the sum of its proper divisors (1).

42957280369 is an equidigital number, since it uses as much as digits as its factorization.

42957280369 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6531840, while the sum is 55.

The spelling of 42957280369 in words is "forty-two billion, nine hundred fifty-seven million, two hundred eighty thousand, three hundred sixty-nine".