122840436 has 48 divisors (see below), whose sum is σ = 304274880. Its totient is φ = 38438400.

The previous prime is 122840423. The next prime is 122840449. The reversal of 122840436 is 634048221.

It is an interprime number because it is at equal distance from previous prime (122840423) and next prime (122840449).

It is a plaindrome in base 14.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 142575 + ... + 143433.

It is an arithmetic number, because the mean of its divisors is an integer number (6339060).

Almost surely, 2^122840436 is an apocalyptic number.

It is an amenable number.

122840436 is an abundant number, since it is smaller than the sum of its proper divisors (181434444).

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

122840436 is a wasteful number, since it uses less digits than its factorization.

122840436 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1584 (or 1582 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 30.

The square root of 122840436 is about 11083.3404711756. The cubic root of 122840436 is about 497.1038382169.

Adding to 122840436 its reverse (634048221), we get a palindrome (756888657).

The spelling of 122840436 in words is "one hundred twenty-two million, eight hundred forty thousand, four hundred thirty-six".