1421232400 has 120 divisors (see below), whose sum is σ = 3918788864. Its totient is φ = 485222400.

The previous prime is 1421232343. The next prime is 1421232403. The reversal of 1421232400 is 42321241.

It is not an unprimeable number, because it can be changed into a prime (1421232403) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 757864 + ... + 759736.

Almost surely, 2^1421232400 is an apocalyptic number.

1421232400 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1421232400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1959394432).

1421232400 is an abundant number, since it is smaller than the sum of its proper divisors (2497556464).

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

1421232400 is a wasteful number, since it uses less digits than its factorization.

1421232400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2169 (or 2158 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 19.

The square root of 1421232400 is about 37699.2360665306. The cubic root of 1421232400 is about 1124.3159363983.

Adding to 1421232400 its reverse (42321241), we get a palindrome (1463553641).

The spelling of 1421232400 in words is "one billion, four hundred twenty-one million, two hundred thirty-two thousand, four hundred".