138740075 has 12 divisors (see below), whose sum is σ = 172202520. Its totient is φ = 110885760.

The previous prime is 138740051. The next prime is 138740113. The reversal of 138740075 is 570047831.

It is not a de Polignac number, because 138740075 - 2¹² = 138735979 is a prime.

It is a super-2 number, since 2×138740075² = 38497616822011250, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 33731 + ... + 37619.

It is an arithmetic number, because the mean of its divisors is an integer number (14350210).

Almost surely, 2^138740075 is an apocalyptic number.

138740075 is a deficient number, since it is larger than the sum of its proper divisors (33462445).

138740075 is a wasteful number, since it uses less digits than its factorization.

138740075 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5326 (or 5321 counting only the distinct ones).

The product of its (nonzero) digits is 23520, while the sum is 35.

The square root of 138740075 is about 11778.7976890683. The cubic root of 138740075 is about 517.6870584861.

The spelling of 138740075 in words is "one hundred thirty-eight million, seven hundred forty thousand, seventy-five".