138142104858 has 16 divisors (see below), whose sum is σ = 306982455360. Its totient is φ = 46047368268.

The previous prime is 138142104857. The next prime is 138142104917. The reversal of 138142104858 is 858401241831.

138142104858 is a `hidden beast` number, since 1 + 381 + 4 + 210 + 4 + 8 + 58 = 666.

It is a super-2 number, since 2×138142104858² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (138142104851) 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, 1279093510 + ... + 1279093617.

It is an arithmetic number, because the mean of its divisors is an integer number (19186403460).

Almost surely, 2^138142104858 is an apocalyptic number.

138142104858 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

138142104858 is an abundant number, since it is smaller than the sum of its proper divisors (168840350502).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

138142104858 is a wasteful number, since it uses less digits than its factorization.

138142104858 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2558187138 (or 2558187132 counting only the distinct ones).

The product of its (nonzero) digits is 245760, while the sum is 45.

The spelling of 138142104858 in words is "one hundred thirty-eight billion, one hundred forty-two million, one hundred four thousand, eight hundred fifty-eight".