138000434 has 16 divisors (see below), whose sum is σ = 243190080. Its totient is φ = 57902160.

The previous prime is 138000433. The next prime is 138000461. The reversal of 138000434 is 434000831.

It is not an unprimeable number, because it can be changed into a prime (138000433) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 240974 + ... + 241545.

It is an arithmetic number, because the mean of its divisors is an integer number (15199380).

Almost surely, 2^138000434 is an apocalyptic number.

138000434 is a deficient number, since it is larger than the sum of its proper divisors (105189646).

138000434 is a wasteful number, since it uses less digits than its factorization.

138000434 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 482545.

The product of its (nonzero) digits is 1152, while the sum is 23.

The square root of 138000434 is about 11747.3585967229. The cubic root of 138000434 is about 516.7654669652.

The spelling of 138000434 in words is "one hundred thirty-eight million, four hundred thirty-four", and thus it is an aban number.