42351351257 has 2 divisors, whose sum is σ = 42351351258. Its totient is φ = 42351351256.

The previous prime is 42351351131. The next prime is 42351351521. The reversal of 42351351257 is 75215315324.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 23897758921 + 18453592336 = 154589^2 + 135844^2 .

It is a cyclic number.

It is not a de Polignac number, because 42351351257 - 2¹⁰ = 42351350233 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 42351351257.

It is not a weakly prime, because it can be changed into another prime (42351350257) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21175675628 + 21175675629.

It is an arithmetic number, because the mean of its divisors is an integer number (21175675629).

Almost surely, 2^42351351257 is an apocalyptic number.

It is an amenable number.

42351351257 is a deficient number, since it is larger than the sum of its proper divisors (1).

42351351257 is an equidigital number, since it uses as much as digits as its factorization.

42351351257 is an evil number, because the sum of its binary digits is even.

The product of its digits is 126000, while the sum is 38.

The spelling of 42351351257 in words is "forty-two billion, three hundred fifty-one million, three hundred fifty-one thousand, two hundred fifty-seven".