42512756401 has 2 divisors, whose sum is σ = 42512756402. Its totient is φ = 42512756400.

The previous prime is 42512756389. The next prime is 42512756417. The reversal of 42512756401 is 10465721524.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 42018850225 + 493906176 = 204985^2 + 22224^2 .

It is a cyclic number.

It is not a de Polignac number, because 42512756401 - 2⁵ = 42512756369 is a prime.

It is not a weakly prime, because it can be changed into another prime (42512756431) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21256378200 + 21256378201.

It is an arithmetic number, because the mean of its divisors is an integer number (21256378201).

Almost surely, 2^42512756401 is an apocalyptic number.

It is an amenable number.

42512756401 is a deficient number, since it is larger than the sum of its proper divisors (1).

42512756401 is an equidigital number, since it uses as much as digits as its factorization.

42512756401 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 67200, while the sum is 37.

The spelling of 42512756401 in words is "forty-two billion, five hundred twelve million, seven hundred fifty-six thousand, four hundred one".