421551254 has 4 divisors (see below), whose sum is σ = 632326884. Its totient is φ = 210775626.

The previous prime is 421551209. The next prime is 421551301. The reversal of 421551254 is 452155124.

It is a semiprime because it is the product of two primes.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105387812 + ... + 105387815.

It is an arithmetic number, because the mean of its divisors is an integer number (158081721).

Almost surely, 2^421551254 is an apocalyptic number.

421551254 is a deficient number, since it is larger than the sum of its proper divisors (210775630).

421551254 is a wasteful number, since it uses less digits than its factorization.

421551254 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 210775629.

The product of its digits is 8000, while the sum is 29.

The square root of 421551254 is about 20531.7133722444. The cubic root of 421551254 is about 749.8081014226.

The spelling of 421551254 in words is "four hundred twenty-one million, five hundred fifty-one thousand, two hundred fifty-four".