142443040 has 48 divisors (see below), whose sum is σ = 341288640. Its totient is φ = 56170240.

The previous prime is 142443013. The next prime is 142443097. The reversal of 142443040 is 40344241.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5091 + ... + 17629.

It is an arithmetic number, because the mean of its divisors is an integer number (7110180).

Almost surely, 2^142443040 is an apocalyptic number.

142443040 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 142443040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (170644320).

142443040 is an abundant number, since it is smaller than the sum of its proper divisors (198845600).

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

142443040 is a wasteful number, since it uses less digits than its factorization.

142443040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12625 (or 12617 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 22.

The square root of 142443040 is about 11934.9503559923. The cubic root of 142443040 is about 522.2523600802.

Adding to 142443040 its reverse (40344241), we get a palindrome (182787281).

The spelling of 142443040 in words is "one hundred forty-two million, four hundred forty-three thousand, forty".