142559894 has 4 divisors (see below), whose sum is σ = 213839844. Its totient is φ = 71279946.

The previous prime is 142559881. The next prime is 142559897. The reversal of 142559894 is 498955241.

It is a happy number.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (142559897) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35639972 + ... + 35639975.

It is an arithmetic number, because the mean of its divisors is an integer number (53459961).

Almost surely, 2^142559894 is an apocalyptic number.

142559894 is a deficient number, since it is larger than the sum of its proper divisors (71279950).

142559894 is an equidigital number, since it uses as much as digits as its factorization.

142559894 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71279949.

The product of its digits is 518400, while the sum is 47.

The square root of 142559894 is about 11939.8448063616. The cubic root of 142559894 is about 522.3951319953.

The spelling of 142559894 in words is "one hundred forty-two million, five hundred fifty-nine thousand, eight hundred ninety-four".