1421286400 has 132 divisors (see below), whose sum is σ = 3586589640. Its totient is φ = 558284800.

The previous prime is 1421286367. The next prime is 1421286401. The reversal of 1421286400 is 46821241.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1421286401) 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, 1509930 + ... + 1510870.

Almost surely, 2^1421286400 is an apocalyptic number.

1421286400 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 1421286400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1793294820).

1421286400 is an abundant number, since it is smaller than the sum of its proper divisors (2165303240).

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

1421286400 is an equidigital number, since it uses as much as digits as its factorization.

1421286400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1030 (or 1007 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 28.

The square root of 1421286400 is about 37699.9522546117. The cubic root of 1421286400 is about 1124.3301757518.

The spelling of 1421286400 in words is "one billion, four hundred twenty-one million, two hundred eighty-six thousand, four hundred".