138126834 has 12 divisors (see below), whose sum is σ = 299274846. Its totient is φ = 46042272.

The previous prime is 138126829. The next prime is 138126841. The reversal of 138126834 is 438621831.

It can be written as a sum of positive squares in only one way, i.e., 75637809 + 62489025 = 8697^2 + 7905^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3836839 + ... + 3836874.

Almost surely, 2^138126834 is an apocalyptic number.

138126834 is an abundant number, since it is smaller than the sum of its proper divisors (161148012).

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

138126834 is a wasteful number, since it uses less digits than its factorization.

138126834 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7673721 (or 7673718 counting only the distinct ones).

The product of its digits is 27648, while the sum is 36.

The square root of 138126834 is about 11752.7372981787. The cubic root of 138126834 is about 516.9231940594.

The spelling of 138126834 in words is "one hundred thirty-eight million, one hundred twenty-six thousand, eight hundred thirty-four".