135642999 has 16 divisors (see below), whose sum is σ = 187996032. Its totient is φ = 86918688.

The previous prime is 135642973. The next prime is 135643007. The reversal of 135642999 is 999246531.

It is not a de Polignac number, because 135642999 - 2⁵ = 135642967 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (135642929) 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 15 ways as a sum of consecutive naturals, for example, 1852 + ... + 16574.

It is an arithmetic number, because the mean of its divisors is an integer number (11749752).

Almost surely, 2^135642999 is an apocalyptic number.

135642999 is a deficient number, since it is larger than the sum of its proper divisors (52353033).

135642999 is a wasteful number, since it uses less digits than its factorization.

135642999 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14846.

The product of its digits is 524880, while the sum is 48.

The square root of 135642999 is about 11646.5874401045. The cubic root of 135642999 is about 513.8059482880.

The spelling of 135642999 in words is "one hundred thirty-five million, six hundred forty-two thousand, nine hundred ninety-nine".