421362451 has 2 divisors, whose sum is σ = 421362452. Its totient is φ = 421362450.

The previous prime is 421362413. The next prime is 421362457. The reversal of 421362451 is 154263124.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 421362451 - 2⁹ = 421361939 is a prime.

It is a super-2 number, since 2×421362451² = 355092630225454802, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (421362457) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 210681225 + 210681226.

It is an arithmetic number, because the mean of its divisors is an integer number (210681226).

Almost surely, 2^421362451 is an apocalyptic number.

421362451 is a deficient number, since it is larger than the sum of its proper divisors (1).

421362451 is an equidigital number, since it uses as much as digits as its factorization.

421362451 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5760, while the sum is 28.

The square root of 421362451 is about 20527.1150189207. The cubic root of 421362451 is about 749.6961441714.

The spelling of 421362451 in words is "four hundred twenty-one million, three hundred sixty-two thousand, four hundred fifty-one".