42512450641 has 2 divisors, whose sum is σ = 42512450642. Its totient is φ = 42512450640.

The previous prime is 42512450621. The next prime is 42512450677. The reversal of 42512450641 is 14605421524.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 40372463041 + 2139987600 = 200929^2 + 46260^2 .

It is a cyclic number.

It is not a de Polignac number, because 42512450641 - 2¹⁵ = 42512417873 is a prime.

It is a super-2 number, since 2×42512450641² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 42512450597 and 42512450606.

It is not a weakly prime, because it can be changed into another prime (42512450611) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21256225320 + 21256225321.

It is an arithmetic number, because the mean of its divisors is an integer number (21256225321).

Almost surely, 2^42512450641 is an apocalyptic number.

It is an amenable number.

42512450641 is a deficient number, since it is larger than the sum of its proper divisors (1).

42512450641 is an equidigital number, since it uses as much as digits as its factorization.

42512450641 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 38400, while the sum is 34.

The spelling of 42512450641 in words is "forty-two billion, five hundred twelve million, four hundred fifty thousand, six hundred forty-one".