138222434 has 36 divisors (see below), whose sum is σ = 246259494. Its totient is φ = 58006368.

The previous prime is 138222431. The next prime is 138222467. The reversal of 138222434 is 434222831.

138222434 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 114554209 + 23668225 = 10703^2 + 4865^2 .

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 138222397 and 138222406.

It is not an unprimeable number, because it can be changed into a prime (138222431) 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 17 ways as a sum of consecutive naturals, for example, 994337 + ... + 994475.

Almost surely, 2^138222434 is an apocalyptic number.

138222434 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

138222434 is a deficient number, since it is larger than the sum of its proper divisors (108037060).

138222434 is an equidigital number, since it uses as much as digits as its factorization.

138222434 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 367 (or 221 counting only the distinct ones).

The product of its digits is 9216, while the sum is 29.

The square root of 138222434 is about 11756.8037323075. The cubic root of 138222434 is about 517.0424237542.

The spelling of 138222434 in words is "one hundred thirty-eight million, two hundred twenty-two thousand, four hundred thirty-four".