142199999 has 8 divisors (see below), whose sum is σ = 144789120. Its totient is φ = 139631896.

The previous prime is 142199977. The next prime is 142200041. The reversal of 142199999 is 999991241.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 142199999 - 2²⁴ = 125422783 is a prime.

It is a Duffinian number.

142199999 is a modest number, since divided by 99999 gives 1421 as remainder.

It is a self number, because there is not a number n which added to its sum of digits gives 142199999.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (142190999) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8732 + ... + 18990.

It is an arithmetic number, because the mean of its divisors is an integer number (18098640).

Almost surely, 2^142199999 is an apocalyptic number.

142199999 is a deficient number, since it is larger than the sum of its proper divisors (2589121).

142199999 is a wasteful number, since it uses less digits than its factorization.

142199999 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10509.

The product of its digits is 472392, while the sum is 53.

The square root of 142199999 is about 11924.7641066815. The cubic root of 142199999 is about 521.9551629354.

The spelling of 142199999 in words is "one hundred forty-two million, one hundred ninety-nine thousand, nine hundred ninety-nine".