122542500040 has 16 divisors (see below), whose sum is σ = 275720625180. Its totient is φ = 49017000000.

The previous prime is 122542500019. The next prime is 122542500043. The reversal of 122542500040 is 40005245221.

It can be written as a sum of positive squares in 2 ways, for example, as 100896440164 + 21646059876 = 317642^2 + 147126^2 .

It is a junction number, because it is equal to n+sod(n) for n = 122542499978 and 122542500014.

It is not an unprimeable number, because it can be changed into a prime (122542500043) 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 3 ways as a sum of consecutive naturals, for example, 1531781211 + ... + 1531781290.

Almost surely, 2^122542500040 is an apocalyptic number.

122542500040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

122542500040 is an abundant number, since it is smaller than the sum of its proper divisors (153178125140).

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

122542500040 is a wasteful number, since it uses less digits than its factorization.

122542500040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3063562512 (or 3063562508 counting only the distinct ones).

The product of its (nonzero) digits is 3200, while the sum is 25.

Adding to 122542500040 its reverse (40005245221), we get a palindrome (162547745261).

The spelling of 122542500040 in words is "one hundred twenty-two billion, five hundred forty-two million, five hundred thousand, forty".