421455120 has 40 divisors (see below), whose sum is σ = 1306511616. Its totient is φ = 112387968.

The previous prime is 421455119. The next prime is 421455127. The reversal of 421455120 is 21554124.

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

It is a Harshad number since it is a multiple of its sum of digits (24).

It is not an unprimeable number, because it can be changed into a prime (421455127) 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, 877792 + ... + 878271.

Almost surely, 2^421455120 is an apocalyptic number.

421455120 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

421455120 is an abundant number, since it is smaller than the sum of its proper divisors (885056496).

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

421455120 is a wasteful number, since it uses less digits than its factorization.

421455120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1756079 (or 1756073 counting only the distinct ones).

The product of its (nonzero) digits is 1600, while the sum is 24.

The square root of 421455120 is about 20529.3721287330. The cubic root of 421455120 is about 749.7510996295.

The spelling of 421455120 in words is "four hundred twenty-one million, four hundred fifty-five thousand, one hundred twenty".