42642896357 has 2 divisors, whose sum is σ = 42642896358. Its totient is φ = 42642896356.

The previous prime is 42642896311. The next prime is 42642896377. The reversal of 42642896357 is 75369824624.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 41822704036 + 820192321 = 204506^2 + 28639^2 .

It is a cyclic number.

It is not a de Polignac number, because 42642896357 - 2⁶ = 42642896293 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42642896377) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21321448178 + 21321448179.

It is an arithmetic number, because the mean of its divisors is an integer number (21321448179).

Almost surely, 2^42642896357 is an apocalyptic number.

It is an amenable number.

42642896357 is a deficient number, since it is larger than the sum of its proper divisors (1).

42642896357 is an equidigital number, since it uses as much as digits as its factorization.

42642896357 is an evil number, because the sum of its binary digits is even.

The product of its digits is 17418240, while the sum is 56.

The spelling of 42642896357 in words is "forty-two billion, six hundred forty-two million, eight hundred ninety-six thousand, three hundred fifty-seven".