138261050 has 48 divisors (see below), whose sum is σ = 271054080. Its totient is φ = 52367040.

The previous prime is 138261049. The next prime is 138261059. The reversal of 138261050 is 50162831.

138261050 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×138261050² = 38232235894205000, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (138261059) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 124799 + ... + 125901.

It is an arithmetic number, because the mean of its divisors is an integer number (5646960).

Almost surely, 2^138261050 is an apocalyptic number.

138261050 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

138261050 is a deficient number, since it is larger than the sum of its proper divisors (132793030).

138261050 is a wasteful number, since it uses less digits than its factorization.

138261050 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1247 (or 1242 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 26.

The square root of 138261050 is about 11758.4459007132. The cubic root of 138261050 is about 517.0905689807.

The spelling of 138261050 in words is "one hundred thirty-eight million, two hundred sixty-one thousand, fifty".