122138270 has 16 divisors (see below), whose sum is σ = 231420240. Its totient is φ = 46283904.

The previous prime is 122138249. The next prime is 122138273. The reversal of 122138270 is 72831221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122138273) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 321227 + ... + 321606.

It is an arithmetic number, because the mean of its divisors is an integer number (14463765).

Almost surely, 2^122138270 is an apocalyptic number.

122138270 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

122138270 is a deficient number, since it is larger than the sum of its proper divisors (109281970).

122138270 is a wasteful number, since it uses less digits than its factorization.

122138270 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 642859.

The product of its (nonzero) digits is 1344, while the sum is 26.

The square root of 122138270 is about 11051.6184335146. The cubic root of 122138270 is about 496.1548656849.

Adding to 122138270 its reverse (72831221), we get a palindrome (194969491).

The spelling of 122138270 in words is "one hundred twenty-two million, one hundred thirty-eight thousand, two hundred seventy".