122138773 has 4 divisors (see below), whose sum is σ = 122394240. Its totient is φ = 121883308.

The previous prime is 122138771. The next prime is 122138831. The reversal of 122138773 is 377831221.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 122138773 - 2¹ = 122138771 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122138771) 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, 127015 + ... + 127972.

It is an arithmetic number, because the mean of its divisors is an integer number (30598560).

Almost surely, 2^122138773 is an apocalyptic number.

It is an amenable number.

122138773 is a deficient number, since it is larger than the sum of its proper divisors (255467).

122138773 is an equidigital number, since it uses as much as digits as its factorization.

122138773 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 255466.

The product of its digits is 14112, while the sum is 34.

The square root of 122138773 is about 11051.6411903391. The cubic root of 122138773 is about 496.1555467861.

Adding to 122138773 its reverse (377831221), we get a palindrome (499969994).

The spelling of 122138773 in words is "one hundred twenty-two million, one hundred thirty-eight thousand, seven hundred seventy-three".