143220400 has 30 divisors (see below), whose sum is σ = 344087972. Its totient is φ = 57288000.

The previous prime is 143220397. The next prime is 143220431. The reversal of 143220400 is 4022341.

It is a Harshad number since it is a multiple of its sum of digits (16).

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 178626 + ... + 179425.

Almost surely, 2^143220400 is an apocalyptic number.

143220400 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

143220400 is an abundant number, since it is smaller than the sum of its proper divisors (200867572).

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

143220400 is a wasteful number, since it uses less digits than its factorization.

143220400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 358069 (or 358058 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 16.

The square root of 143220400 is about 11967.4725819615. The cubic root of 143220400 is about 523.2006731873.

Adding to 143220400 its reverse (4022341), we get a palindrome (147242741).

The spelling of 143220400 in words is "one hundred forty-three million, two hundred twenty thousand, four hundred".