142043240 has 64 divisors (see below), whose sum is σ = 347328000. Its totient is φ = 52081920.

The previous prime is 142043203. The next prime is 142043261. The reversal of 142043240 is 42340241.

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 20546 + ... + 26574.

It is an arithmetic number, because the mean of its divisors is an integer number (5427000).

Almost surely, 2^142043240 is an apocalyptic number.

142043240 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 142043240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (173664000).

142043240 is an abundant number, since it is smaller than the sum of its proper divisors (205284760).

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

142043240 is a wasteful number, since it uses less digits than its factorization.

142043240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6090 (or 6086 counting only the distinct ones).

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

The square root of 142043240 is about 11918.1894598131. The cubic root of 142043240 is about 521.7632940781.

Adding to 142043240 its reverse (42340241), we get a palindrome (184383481).

The spelling of 142043240 in words is "one hundred forty-two million, forty-three thousand, two hundred forty".