142288893 has 12 divisors (see below), whose sum is σ = 213140928. Its totient is φ = 94859100.

The previous prime is 142288871. The next prime is 142288897. The reversal of 142288893 is 398882241.

It is not a de Polignac number, because 142288893 - 2¹² = 142284797 is a prime.

It is a super-2 number, since 2×142288893² = 40492258142330898, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (142288897) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 292533 + ... + 293018.

It is an arithmetic number, because the mean of its divisors is an integer number (17761744).

Almost surely, 2^142288893 is an apocalyptic number.

It is an amenable number.

142288893 is a deficient number, since it is larger than the sum of its proper divisors (70852035).

142288893 is an frugal number, since it uses more digits than its factorization.

142288893 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 585566 (or 585554 counting only the distinct ones).

The product of its digits is 221184, while the sum is 45.

The square root of 142288893 is about 11928.4908098217. The cubic root of 142288893 is about 522.0639041859.

The spelling of 142288893 in words is "one hundred forty-two million, two hundred eighty-eight thousand, eight hundred ninety-three".