16142999 has 4 divisors (see below), whose sum is σ = 16266360. Its totient is φ = 16019640.

The previous prime is 16142993. The next prime is 16143007. The reversal of 16142999 is 99924161.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 16142999 - 2⁸ = 16142743 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16142993) 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, 61484 + ... + 61745.

It is an arithmetic number, because the mean of its divisors is an integer number (4066590).

Almost surely, 2^16142999 is an apocalyptic number.

16142999 is a deficient number, since it is larger than the sum of its proper divisors (123361).

16142999 is a wasteful number, since it uses less digits than its factorization.

16142999 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 123360.

The product of its digits is 34992, while the sum is 41.

The square root of 16142999 is about 4017.8351135904. The cubic root of 16142999 is about 252.7326822890.

The spelling of 16142999 in words is "sixteen million, one hundred forty-two thousand, nine hundred ninety-nine".