421553254 has 4 divisors (see below), whose sum is σ = 632329884. Its totient is φ = 210776626.

The previous prime is 421553227. The next prime is 421553263. The reversal of 421553254 is 452355124.

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

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105388312 + ... + 105388315.

It is an arithmetic number, because the mean of its divisors is an integer number (158082471).

Almost surely, 2^421553254 is an apocalyptic number.

421553254 is a deficient number, since it is larger than the sum of its proper divisors (210776630).

421553254 is a wasteful number, since it uses less digits than its factorization.

421553254 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 210776629.

The product of its digits is 24000, while the sum is 31.

The square root of 421553254 is about 20531.7620773279. The cubic root of 421553254 is about 749.8092872127.

The spelling of 421553254 in words is "four hundred twenty-one million, five hundred fifty-three thousand, two hundred fifty-four".