421247910 has 32 divisors (see below), whose sum is σ = 1045859040. Its totient is φ = 108459008.

The previous prime is 421247873. The next prime is 421247927. The reversal of 421247910 is 19742124.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 241227 + ... + 242966.

It is an arithmetic number, because the mean of its divisors is an integer number (32683095).

Almost surely, 2^421247910 is an apocalyptic number.

421247910 is an abundant number, since it is smaller than the sum of its proper divisors (624611130).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

421247910 is a wasteful number, since it uses less digits than its factorization.

421247910 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 484232.

The product of its (nonzero) digits is 4032, while the sum is 30.

The square root of 421247910 is about 20524.3248366420. The cubic root of 421247910 is about 749.6282068347.

The spelling of 421247910 in words is "four hundred twenty-one million, two hundred forty-seven thousand, nine hundred ten".