421140521515249 has 2 divisors, whose sum is σ = 421140521515250. Its totient is φ = 421140521515248.

The previous prime is 421140521515243. The next prime is 421140521515291. The reversal of 421140521515249 is 942515125041124.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 391182851825649 + 29957669689600 = 19778343^2 + 5473360^2 .

It is a cyclic number.

It is not a de Polignac number, because 421140521515249 - 2³⁹ = 420590765701361 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 421140521515199 and 421140521515208.

It is not a weakly prime, because it can be changed into another prime (421140521515243) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 210570260757624 + 210570260757625.

It is an arithmetic number, because the mean of its divisors is an integer number (210570260757625).

Almost surely, 2^{421140521515249} is an apocalyptic number.

It is an amenable number.

421140521515249 is a deficient number, since it is larger than the sum of its proper divisors (1).

421140521515249 is an equidigital number, since it uses as much as digits as its factorization.

421140521515249 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 576000, while the sum is 46.

The spelling of 421140521515249 in words is "four hundred twenty-one trillion, one hundred forty billion, five hundred twenty-one million, five hundred fifteen thousand, two hundred forty-nine".