421459453 has 2 divisors, whose sum is σ = 421459454. Its totient is φ = 421459452.

The previous prime is 421459447. The next prime is 421459457. The reversal of 421459453 is 354954124.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 357890724 + 63568729 = 18918^2 + 7973^2 .

It is a cyclic number.

It is not a de Polignac number, because 421459453 - 2⁹ = 421458941 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (421459457) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 210729726 + 210729727.

It is an arithmetic number, because the mean of its divisors is an integer number (210729727).

Almost surely, 2^421459453 is an apocalyptic number.

It is an amenable number.

421459453 is a deficient number, since it is larger than the sum of its proper divisors (1).

421459453 is an equidigital number, since it uses as much as digits as its factorization.

421459453 is an evil number, because the sum of its binary digits is even.

The product of its digits is 86400, while the sum is 37.

The square root of 421459453 is about 20529.4776601841. The cubic root of 421459453 is about 749.7536690295.

The spelling of 421459453 in words is "four hundred twenty-one million, four hundred fifty-nine thousand, four hundred fifty-three".