1425421200 has 120 divisors (see below), whose sum is σ = 5218429888. Its totient is φ = 325808640.

The previous prime is 1425421187. The next prime is 1425421201. The reversal of 1425421200 is 21245241.

It is a tau number, because it is divible by the number of its divisors (120).

It is a Harshad number since it is a multiple of its sum of digits (21).

It is not an unprimeable number, because it can be changed into a prime (1425421201) 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, 76447 + ... + 93246.

Almost surely, 2^1425421200 is an apocalyptic number.

1425421200 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1425421200 is an abundant number, since it is smaller than the sum of its proper divisors (3793008688).

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

1425421200 is a wasteful number, since it uses less digits than its factorization.

1425421200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 169721 (or 169710 counting only the distinct ones).

The product of its (nonzero) digits is 640, while the sum is 21.

The square root of 1425421200 is about 37754.7506944490. The cubic root of 1425421200 is about 1125.4194189228.

Adding to 1425421200 its reverse (21245241), we get a palindrome (1446666441).

The spelling of 1425421200 in words is "one billion, four hundred twenty-five million, four hundred twenty-one thousand, two hundred".