142089718 has 4 divisors (see below), whose sum is σ = 213134580. Its totient is φ = 71044858.

The previous prime is 142089697. The next prime is 142089737. The reversal of 142089718 is 817980241.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 817980241 = 13 ⋅62921557.

It is a super-2 number, since 2×142089718² = 40378975922639048, which contains 22 as substring.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35522428 + ... + 35522431.

It is an arithmetic number, because the mean of its divisors is an integer number (53283645).

Almost surely, 2^142089718 is an apocalyptic number.

142089718 is a deficient number, since it is larger than the sum of its proper divisors (71044862).

142089718 is an equidigital number, since it uses as much as digits as its factorization.

142089718 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71044861.

The product of its (nonzero) digits is 32256, while the sum is 40.

The square root of 142089718 is about 11920.1391770398. The cubic root of 142089718 is about 521.8201966332.

The spelling of 142089718 in words is "one hundred forty-two million, eighty-nine thousand, seven hundred eighteen".