1422136400 has 60 divisors (see below), whose sum is σ = 3452000412. Its totient is φ = 562974720.

The previous prime is 1422136399. The next prime is 1422136511. The reversal of 1422136400 is 46312241.

It can be written as a sum of positive squares in 6 ways, for example, as 66129424 + 1356006976 = 8132^2 + 36824^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 20474 + ... + 57126.

Almost surely, 2^1422136400 is an apocalyptic number.

1422136400 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 1422136400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1726000206).

1422136400 is an abundant number, since it is smaller than the sum of its proper divisors (2029864012).

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

1422136400 is a wasteful number, since it uses less digits than its factorization.

1422136400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36768 (or 36757 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 23.

The square root of 1422136400 is about 37711.2237934544. The cubic root of 1422136400 is about 1124.5542662185.

Adding to 1422136400 its reverse (46312241), we get a palindrome (1468448641).

The spelling of 1422136400 in words is "one billion, four hundred twenty-two million, one hundred thirty-six thousand, four hundred".