421297451 has 8 divisors (see below), whose sum is σ = 446302944. Its totient is φ = 396316800.

The previous prime is 421297447. The next prime is 421297453. The reversal of 421297451 is 154792124.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 421297451 - 2² = 421297447 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (421297453) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 37601 + ... + 47501.

It is an arithmetic number, because the mean of its divisors is an integer number (55787868).

Almost surely, 2^421297451 is an apocalyptic number.

421297451 is a deficient number, since it is larger than the sum of its proper divisors (25005493).

421297451 is a wasteful number, since it uses less digits than its factorization.

421297451 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12421.

The product of its digits is 20160, while the sum is 35.

The square root of 421297451 is about 20525.5316861708. The cubic root of 421297451 is about 749.6575924406.

The spelling of 421297451 in words is "four hundred twenty-one million, two hundred ninety-seven thousand, four hundred fifty-one".