142439658 has 16 divisors (see below), whose sum is σ = 291828096. Its totient is φ = 46321760.

The previous prime is 142439653. The next prime is 142439681. The reversal of 142439658 is 856934241.

It is not an unprimeable number, because it can be changed into a prime (142439653) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 289266 + ... + 289757.

It is an arithmetic number, because the mean of its divisors is an integer number (18239256).

Almost surely, 2^142439658 is an apocalyptic number.

142439658 is an abundant number, since it is smaller than the sum of its proper divisors (149388438).

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

142439658 is a wasteful number, since it uses less digits than its factorization.

142439658 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 579069.

The product of its digits is 207360, while the sum is 42.

The square root of 142439658 is about 11934.8086704396. The cubic root of 142439658 is about 522.2482267989.

The spelling of 142439658 in words is "one hundred forty-two million, four hundred thirty-nine thousand, six hundred fifty-eight".