122240042 has 8 divisors (see below), whose sum is σ = 183886500. Its totient is φ = 60944544.

The previous prime is 122240039. The next prime is 122240077. The reversal of 122240042 is 240042221.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 116618401 + 5621641 = 10799^2 + 2371^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 122240042.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 86867 + ... + 88262.

Almost surely, 2^122240042 is an apocalyptic number.

122240042 is a deficient number, since it is larger than the sum of its proper divisors (61646458).

122240042 is a wasteful number, since it uses less digits than its factorization.

122240042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 175480.

The product of its (nonzero) digits is 256, while the sum is 17.

The square root of 122240042 is about 11056.2218682514. The cubic root of 122240042 is about 496.2926348284.

Adding to 122240042 its reverse (240042221), we get a palindrome (362282263).

The spelling of 122240042 in words is "one hundred twenty-two million, two hundred forty thousand, forty-two".