138130502 has 16 divisors (see below), whose sum is σ = 216525312. Its totient is φ = 65964360.

The previous prime is 138130481. The next prime is 138130507. The reversal of 138130502 is 205031831.

It is a Harshad number since it is a multiple of its sum of digits (23).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (138130507) 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, 36227 + ... + 39857.

It is an arithmetic number, because the mean of its divisors is an integer number (13532832).

Almost surely, 2^138130502 is an apocalyptic number.

138130502 is a deficient number, since it is larger than the sum of its proper divisors (78394810).

138130502 is a wasteful number, since it uses less digits than its factorization.

138130502 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4483.

The product of its (nonzero) digits is 720, while the sum is 23.

The square root of 138130502 is about 11752.8933458957. The cubic root of 138130502 is about 516.9277697030.

The spelling of 138130502 in words is "one hundred thirty-eight million, one hundred thirty thousand, five hundred two".