421911120 has 40 divisors (see below), whose sum is σ = 1307925216. Its totient is φ = 112509568.

The previous prime is 421911109. The next prime is 421911121. The reversal of 421911120 is 21119124.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (40).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (421911121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 878742 + ... + 879221.

Almost surely, 2^421911120 is an apocalyptic number.

421911120 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

421911120 is an abundant number, since it is smaller than the sum of its proper divisors (886014096).

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

421911120 is a wasteful number, since it uses less digits than its factorization.

421911120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1757979 (or 1757973 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 21.

The square root of 421911120 is about 20540.4751649031. The cubic root of 421911120 is about 750.0214038336.

The spelling of 421911120 in words is "four hundred twenty-one million, nine hundred eleven thousand, one hundred twenty".