142874999 has 4 divisors (see below), whose sum is σ = 142926336. Its totient is φ = 142823664.

The previous prime is 142874989. The next prime is 142875017. The reversal of 142874999 is 999478241.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 999478241 = 809 ⋅1235449.

It is a cyclic number.

It is not a de Polignac number, because 142874999 - 2¹⁶ = 142809463 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 142874999.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (142874929) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21239 + ... + 27144.

It is an arithmetic number, because the mean of its divisors is an integer number (35731584).

Almost surely, 2^142874999 is an apocalyptic number.

142874999 is a deficient number, since it is larger than the sum of its proper divisors (51337).

142874999 is an equidigital number, since it uses as much as digits as its factorization.

142874999 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51336.

The product of its digits is 1306368, while the sum is 53.

The square root of 142874999 is about 11953.0330460515. The cubic root of 142874999 is about 522.7797380291.

It can be divided in two parts, 1 and 42874999, that added together give a cube (42875000 = 350³).

The spelling of 142874999 in words is "one hundred forty-two million, eight hundred seventy-four thousand, nine hundred ninety-nine".