138171246 has 32 divisors (see below), whose sum is σ = 285186048. Its totient is φ = 44595360.

The previous prime is 138171227. The next prime is 138171251. The reversal of 138171246 is 642171831.

138171246 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 48111 + ... + 50901.

It is an arithmetic number, because the mean of its divisors is an integer number (8912064).

Almost surely, 2^138171246 is an apocalyptic number.

138171246 is an abundant number, since it is smaller than the sum of its proper divisors (147014802).

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

138171246 is a wasteful number, since it uses less digits than its factorization.

138171246 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3056.

The product of its digits is 8064, while the sum is 33.

The square root of 138171246 is about 11754.6265785009. The cubic root of 138171246 is about 516.9785903262.

It can be divided in two parts, 1381 and 71246, that added together give a palindrome (72627).

The spelling of 138171246 in words is "one hundred thirty-eight million, one hundred seventy-one thousand, two hundred forty-six".