42514001521 has 2 divisors, whose sum is σ = 42514001522. Its totient is φ = 42514001520.

The previous prime is 42514001507. The next prime is 42514001597. The reversal of 42514001521 is 12510041524.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 40352774400 + 2161227121 = 200880^2 + 46489^2 .

It is a cyclic number.

It is not a de Polignac number, because 42514001521 - 2⁹ = 42514001009 is a prime.

It is not a weakly prime, because it can be changed into another prime (42514001921) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21257000760 + 21257000761.

It is an arithmetic number, because the mean of its divisors is an integer number (21257000761).

Almost surely, 2^42514001521 is an apocalyptic number.

It is an amenable number.

42514001521 is a deficient number, since it is larger than the sum of its proper divisors (1).

42514001521 is an equidigital number, since it uses as much as digits as its factorization.

42514001521 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1600, while the sum is 25.

The spelling of 42514001521 in words is "forty-two billion, five hundred fourteen million, one thousand, five hundred twenty-one".