122122400042 has 8 divisors (see below), whose sum is σ = 183204535332. Its totient is φ = 61054221600.

The previous prime is 122122399999. The next prime is 122122400051. The reversal of 122122400042 is 240004221221.

It can be written as a sum of positive squares in 2 ways, for example, as 103033938121 + 19088461921 = 320989^2 + 138161^2 .

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

It is a junction number, because it is equal to n+sod(n) for n = 122122399987 and 122122400023.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3467309 + ... + 3502352.

Almost surely, 2^122122400042 is an apocalyptic number.

122122400042 is a deficient number, since it is larger than the sum of its proper divisors (61082135290).

122122400042 is an equidigital number, since it uses as much as digits as its factorization.

122122400042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6978424.

The product of its (nonzero) digits is 512, while the sum is 20.

Adding to 122122400042 its reverse (240004221221), we get a palindrome (362126621263).

The spelling of 122122400042 in words is "one hundred twenty-two billion, one hundred twenty-two million, four hundred thousand, forty-two".