1420533400 has 96 divisors (see below), whose sum is σ = 3880220400. Its totient is φ = 476812800.

The previous prime is 1420533329. The next prime is 1420533407. The reversal of 1420533400 is 43350241.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1420533407) 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, 3766 + ... + 53434.

Almost surely, 2^1420533400 is an apocalyptic number.

1420533400 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 1420533400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1940110200).

1420533400 is an abundant number, since it is smaller than the sum of its proper divisors (2459687000).

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

1420533400 is a wasteful number, since it uses less digits than its factorization.

1420533400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49709 (or 49700 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 22.

The square root of 1420533400 is about 37689.9641814635. The cubic root of 1420533400 is about 1124.1315833171.

Adding to 1420533400 its reverse (43350241), we get a palindrome (1463883641).

The spelling of 1420533400 in words is "one billion, four hundred twenty million, five hundred thirty-three thousand, four hundred".