122149746 has 48 divisors (see below), whose sum is σ = 279520800. Its totient is φ = 38444544.

The previous prime is 122149697. The next prime is 122149759. The reversal of 122149746 is 647941221.

It is a happy number.

122149746 is a `hidden beast` number, since 122 + 1 + 497 + 46 = 666.

It is a self number, because there is not a number n which added to its sum of digits gives 122149746.

It is an unprimeable number.

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 23 ways as a sum of consecutive naturals, for example, 197025 + ... + 197643.

It is an arithmetic number, because the mean of its divisors is an integer number (5823350).

Almost surely, 2^122149746 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 122149746, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (139760400).

122149746 is an abundant number, since it is smaller than the sum of its proper divisors (157371054).

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

122149746 is a wasteful number, since it uses less digits than its factorization.

122149746 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1223 (or 1220 counting only the distinct ones).

The product of its digits is 24192, while the sum is 36.

The square root of 122149746 is about 11052.1376212930. The cubic root of 122149746 is about 496.1704046172.

The spelling of 122149746 in words is "one hundred twenty-two million, one hundred forty-nine thousand, seven hundred forty-six".