142031240 has 64 divisors (see below), whose sum is σ = 349090560. Its totient is φ = 51690240.

The previous prime is 142031207. The next prime is 142031249. The reversal of 142031240 is 42130241.

It is not an unprimeable number, because it can be changed into a prime (142031249) by changing a digit.

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, 34997 + ... + 38843.

It is an arithmetic number, because the mean of its divisors is an integer number (5454540).

Almost surely, 2^142031240 is an apocalyptic number.

142031240 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 142031240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (174545280).

142031240 is an abundant number, since it is smaller than the sum of its proper divisors (207059320).

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

142031240 is a wasteful number, since it uses less digits than its factorization.

142031240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3942 (or 3938 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 17.

The square root of 142031240 is about 11917.6860170085. The cubic root of 142031240 is about 521.7486005809.

Adding to 142031240 its reverse (42130241), we get a palindrome (184161481).

Subtracting from 142031240 its reverse (42130241), we obtain a palindrome (99900999).

The spelling of 142031240 in words is "one hundred forty-two million, thirty-one thousand, two hundred forty".