122723442 has 24 divisors (see below), whose sum is σ = 281542716. Its totient is φ = 38501376.

The previous prime is 122723441. The next prime is 122723443. The reversal of 122723442 is 244327221.

It is an interprime number because it is at equal distance from previous prime (122723441) and next prime (122723443).

It can be written as a sum of positive squares in 2 ways, for example, as 117483921 + 5239521 = 10839^2 + 2289^2 .

It is a super-2 number, since 2×122723442² = 30122086432654728, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (122723441) 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 11 ways as a sum of consecutive naturals, for example, 200223 + ... + 200834.

Almost surely, 2^122723442 is an apocalyptic number.

122723442 is an abundant number, since it is smaller than the sum of its proper divisors (158819274).

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

122723442 is a wasteful number, since it uses less digits than its factorization.

122723442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 401082 (or 401079 counting only the distinct ones).

The product of its digits is 5376, while the sum is 27.

The square root of 122723442 is about 11078.0612924825. The cubic root of 122723442 is about 496.9459731536.

The spelling of 122723442 in words is "one hundred twenty-two million, seven hundred twenty-three thousand, four hundred forty-two".