138007012 has 24 divisors (see below), whose sum is σ = 283735872. Its totient is φ = 57904800.

The previous prime is 138006997. The next prime is 138007019. The reversal of 138007012 is 210700831.

It is a super-2 number, since 2×138007012² = 38091870722336288, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is not an unprimeable number, because it can be changed into a prime (138007019) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 120064 + ... + 121207.

It is an arithmetic number, because the mean of its divisors is an integer number (11822328).

Almost surely, 2^138007012 is an apocalyptic number.

It is an amenable number.

138007012 is an abundant number, since it is smaller than the sum of its proper divisors (145728860).

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

138007012 is a wasteful number, since it uses less digits than its factorization.

138007012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 241299 (or 241297 counting only the distinct ones).

The product of its (nonzero) digits is 336, while the sum is 22.

The square root of 138007012 is about 11747.6385712193. The cubic root of 138007012 is about 516.7736776380.

Adding to 138007012 its reverse (210700831), we get a palindrome (348707843).

The spelling of 138007012 in words is "one hundred thirty-eight million, seven thousand, twelve".