138144070 has 16 divisors (see below), whose sum is σ = 250151328. Its totient is φ = 54926080.

The previous prime is 138144067. The next prime is 138144073. The reversal of 138144070 is 70441831.

138144070 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (138144067) and next prime (138144073).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (138144073) 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, 39691 + ... + 43030.

It is an arithmetic number, because the mean of its divisors is an integer number (15634458).

Almost surely, 2^138144070 is an apocalyptic number.

138144070 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

138144070 is a deficient number, since it is larger than the sum of its proper divisors (112007258).

138144070 is a wasteful number, since it uses less digits than its factorization.

138144070 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 82895.

The product of its (nonzero) digits is 2688, while the sum is 28.

The square root of 138144070 is about 11753.4705512882. The cubic root of 138144070 is about 516.9446943896.

It can be divided in two parts, 1381 and 44070, that added together give a triangular number (45451 = T₃₀₁).

The spelling of 138144070 in words is "one hundred thirty-eight million, one hundred forty-four thousand, seventy".