142708138 has 16 divisors (see below), whose sum is σ = 220685760. Its totient is φ = 69179616.

The previous prime is 142708129. The next prime is 142708157. The reversal of 142708138 is 831807241.

It is a happy number.

It is a super-2 number, since 2×142708138² = 40731225302854088, which contains 22 as substring.

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 7 ways as a sum of consecutive naturals, for example, 331 + ... + 16897.

It is an arithmetic number, because the mean of its divisors is an integer number (13792860).

Almost surely, 2^142708138 is an apocalyptic number.

142708138 is a deficient number, since it is larger than the sum of its proper divisors (77977622).

142708138 is a wasteful number, since it uses less digits than its factorization.

142708138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16701.

The product of its (nonzero) digits is 10752, while the sum is 34.

The square root of 142708138 is about 11946.0511467179. The cubic root of 142708138 is about 522.5761439056.

The spelling of 142708138 in words is "one hundred forty-two million, seven hundred eight thousand, one hundred thirty-eight".