142987299 has 16 divisors (see below), whose sum is σ = 234646272. Its totient is φ = 75421728.

The previous prime is 142987291. The next prime is 142987321. The reversal of 142987299 is 992789241.

It is not a de Polignac number, because 142987299 - 2³ = 142987291 is a prime.

It is not an unprimeable number, because it can be changed into a prime (142987291) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 261609 + ... + 262154.

It is an arithmetic number, because the mean of its divisors is an integer number (14665392).

Almost surely, 2^142987299 is an apocalyptic number.

142987299 is a deficient number, since it is larger than the sum of its proper divisors (91658973).

142987299 is a wasteful number, since it uses less digits than its factorization.

142987299 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 523786.

The product of its digits is 653184, while the sum is 51.

The square root of 142987299 is about 11957.7296758206. The cubic root of 142987299 is about 522.9166707562.

The spelling of 142987299 in words is "one hundred forty-two million, nine hundred eighty-seven thousand, two hundred ninety-nine".