122451535240 has 32 divisors (see below), whose sum is σ = 276401885760. Its totient is φ = 48823115200.

The previous prime is 122451535229. The next prime is 122451535247. The reversal of 122451535240 is 42535154221.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 122451535196 and 122451535205.

It is not an unprimeable number, because it can be changed into a prime (122451535247) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4909246 + ... + 4934125.

It is an arithmetic number, because the mean of its divisors is an integer number (8637558930).

Almost surely, 2^122451535240 is an apocalyptic number.

122451535240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

122451535240 is an abundant number, since it is smaller than the sum of its proper divisors (153950350520).

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

122451535240 is a wasteful number, since it uses less digits than its factorization.

122451535240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9843693 (or 9843689 counting only the distinct ones).

The product of its (nonzero) digits is 48000, while the sum is 34.

Adding to 122451535240 its reverse (42535154221), we get a palindrome (164986689461).

The spelling of 122451535240 in words is "one hundred twenty-two billion, four hundred fifty-one million, five hundred thirty-five thousand, two hundred forty".