142043400 has 288 divisors, whose sum is σ = 515324160. Its totient is φ = 34974720.

The previous prime is 142043399. The next prime is 142043413. The reversal of 142043400 is 4340241.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 1945764 + ... + 1945836.

It is an arithmetic number, because the mean of its divisors is an integer number (1789320).

Almost surely, 2^142043400 is an apocalyptic number.

142043400 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 142043400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (257662080).

142043400 is an abundant number, since it is smaller than the sum of its proper divisors (373280760).

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

142043400 is a wasteful number, since it uses less digits than its factorization.

142043400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 165 (or 153 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 18.

The square root of 142043400 is about 11918.1961722402. The cubic root of 142043400 is about 521.7634899858.

Adding to 142043400 its reverse (4340241), we get a palindrome (146383641).

The spelling of 142043400 in words is "one hundred forty-two million, forty-three thousand, four hundred".