1421032320 has 96 divisors (see below), whose sum is σ = 4907022120. Its totient is φ = 378940416.

The previous prime is 1421032307. The next prime is 1421032321. The reversal of 1421032320 is 232301241.

It is a tau number, because it is divible by the number of its divisors (96).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 1421032293 and 1421032302.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1421032321) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 117594 + ... + 129113.

Almost surely, 2^1421032320 is an apocalyptic number.

1421032320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1421032320 is an abundant number, since it is smaller than the sum of its proper divisors (3485989800).

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

1421032320 is a wasteful number, since it uses less digits than its factorization.

1421032320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 246732 (or 246717 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

The square root of 1421032320 is about 37696.5823384561. The cubic root of 1421032320 is about 1124.2631738125.

Adding to 1421032320 its reverse (232301241), we get a palindrome (1653333561).

The spelling of 1421032320 in words is "one billion, four hundred twenty-one million, thirty-two thousand, three hundred twenty".