138277254 has 8 divisors (see below), whose sum is σ = 276554520. Its totient is φ = 46092416.

The previous prime is 138277199. The next prime is 138277259. The reversal of 138277254 is 452772831.

138277254 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

138277254 is an admirable number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (138277259) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11523099 + ... + 11523110.

It is an arithmetic number, because the mean of its divisors is an integer number (34569315).

Almost surely, 2^138277254 is an apocalyptic number.

138277254 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

138277254 is a wasteful number, since it uses less digits than its factorization.

138277254 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23046214.

The product of its digits is 94080, while the sum is 39.

The square root of 138277254 is about 11759.1349171612. The cubic root of 138277254 is about 517.1107689533.

The spelling of 138277254 in words is "one hundred thirty-eight million, two hundred seventy-seven thousand, two hundred fifty-four".