142640750 has 32 divisors (see below), whose sum is σ = 305173440. Its totient is φ = 48904800.

The previous prime is 142640711. The next prime is 142640767. The reversal of 142640750 is 57046241.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 39005 + ... + 42504.

It is an arithmetic number, because the mean of its divisors is an integer number (9536670).

Almost surely, 2^142640750 is an apocalyptic number.

142640750 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

142640750 is an abundant number, since it is smaller than the sum of its proper divisors (162532690).

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

142640750 is an equidigital number, since it uses as much as digits as its factorization.

142640750 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81533 (or 81523 counting only the distinct ones).

The product of its (nonzero) digits is 6720, while the sum is 29.

The square root of 142640750 is about 11943.2303000486. The cubic root of 142640750 is about 522.4938759842.

Adding to 142640750 its reverse (57046241), we get a palindrome (199686991).

The spelling of 142640750 in words is "one hundred forty-two million, six hundred forty thousand, seven hundred fifty".