421264277449 has 2 divisors, whose sum is σ = 421264277450. Its totient is φ = 421264277448.

The previous prime is 421264277431. The next prime is 421264277461. The reversal of 421264277449 is 944772462124.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 407394975625 + 13869301824 = 638275^2 + 117768^2 .

It is a cyclic number.

It is not a de Polignac number, because 421264277449 - 2⁵ = 421264277417 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 421264277396 and 421264277405.

It is not a weakly prime, because it can be changed into another prime (421264277419) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 210632138724 + 210632138725.

It is an arithmetic number, because the mean of its divisors is an integer number (210632138725).

Almost surely, 2^421264277449 is an apocalyptic number.

It is an amenable number.

421264277449 is a deficient number, since it is larger than the sum of its proper divisors (1).

421264277449 is an equidigital number, since it uses as much as digits as its factorization.

421264277449 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5419008, while the sum is 52.

The spelling of 421264277449 in words is "four hundred twenty-one billion, two hundred sixty-four million, two hundred seventy-seven thousand, four hundred forty-nine".