142739955 has 32 divisors (see below), whose sum is σ = 264798720. Its totient is φ = 72816480.

The previous prime is 142739929. The next prime is 142739963. The reversal of 142739955 is 559937241.

It is a happy number.

It is not a de Polignac number, because 142739955 - 2¹⁴ = 142723571 is a prime.

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 142739955.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 19881 + ... + 26090.

It is an arithmetic number, because the mean of its divisors is an integer number (8274960).

Almost surely, 2^142739955 is an apocalyptic number.

142739955 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

142739955 is a deficient number, since it is larger than the sum of its proper divisors (122058765).

142739955 is a wasteful number, since it uses less digits than its factorization.

142739955 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46008 (or 46002 counting only the distinct ones).

The product of its digits is 340200, while the sum is 45.

The square root of 142739955 is about 11947.3827677864. The cubic root of 142739955 is about 522.6149774061.

The spelling of 142739955 in words is "one hundred forty-two million, seven hundred thirty-nine thousand, nine hundred fifty-five".