122194872 has 64 divisors (see below), whose sum is σ = 340800000. Its totient is φ = 40567392.

The previous prime is 122194867. The next prime is 122194873. The reversal of 122194872 is 278491221.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122194873) 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 15 ways as a sum of consecutive naturals, for example, 60129 + ... + 62127.

It is an arithmetic number, because the mean of its divisors is an integer number (5325000).

Almost surely, 2^122194872 is an apocalyptic number.

122194872 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 122194872, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (170400000).

122194872 is an abundant number, since it is smaller than the sum of its proper divisors (218605128).

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

122194872 is a wasteful number, since it uses less digits than its factorization.

122194872 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2297 (or 2287 counting only the distinct ones).

The product of its digits is 16128, while the sum is 36.

The square root of 122194872 is about 11054.1789383020. The cubic root of 122194872 is about 496.2314974691.

The spelling of 122194872 in words is "one hundred twenty-two million, one hundred ninety-four thousand, eight hundred seventy-two".