142438759 has 4 divisors (see below), whose sum is σ = 142633816. Its totient is φ = 142243704.

The previous prime is 142438757. The next prime is 142438783. The reversal of 142438759 is 957834241.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 142438759 - 2¹ = 142438757 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (142438757) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 96429 + ... + 97894.

It is an arithmetic number, because the mean of its divisors is an integer number (35658454).

Almost surely, 2^142438759 is an apocalyptic number.

142438759 is a deficient number, since it is larger than the sum of its proper divisors (195057).

142438759 is an equidigital number, since it uses as much as digits as its factorization.

142438759 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 195056.

The product of its digits is 241920, while the sum is 43.

The square root of 142438759 is about 11934.7710074387. The cubic root of 142438759 is about 522.2471280830.

The spelling of 142438759 in words is "one hundred forty-two million, four hundred thirty-eight thousand, seven hundred fifty-nine".