143242400 has 72 divisors (see below), whose sum is σ = 399661920. Its totient is φ = 49109760.

The previous prime is 143242369. The next prime is 143242403. The reversal of 143242400 is 4242341.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is not an unprimeable number, because it can be changed into a prime (143242403) 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, 7190 + ... + 18389.

It is an arithmetic number, because the mean of its divisors is an integer number (5550860).

Almost surely, 2^143242400 is an apocalyptic number.

143242400 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

143242400 is an abundant number, since it is smaller than the sum of its proper divisors (256419520).

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

143242400 is a wasteful number, since it uses less digits than its factorization.

143242400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25606 (or 25593 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 20.

The square root of 143242400 is about 11968.3917048198. The cubic root of 143242400 is about 523.2274613299.

Adding to 143242400 its reverse (4242341), we get a palindrome (147484741).

The spelling of 143242400 in words is "one hundred forty-three million, two hundred forty-two thousand, four hundred".