122440240 has 40 divisors (see below), whose sum is σ = 306574128. Its totient is φ = 45208320.

The previous prime is 122440211. The next prime is 122440249. The reversal of 122440240 is 42044221.

It is a tau number, because it is divible by the number of its divisors (40).

It is a super-2 number, since 2×122440240² = 29983224742515200, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (122440249) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 57826 + ... + 59905.

Almost surely, 2^122440240 is an apocalyptic number.

122440240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

122440240 is an abundant number, since it is smaller than the sum of its proper divisors (184133888).

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

122440240 is a wasteful number, since it uses less digits than its factorization.

122440240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 117757 (or 117751 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 19.

The square root of 122440240 is about 11065.2717996441. The cubic root of 122440240 is about 496.5634206261.

Adding to 122440240 its reverse (42044221), we get a palindrome (164484461).

The spelling of 122440240 in words is "one hundred twenty-two million, four hundred forty thousand, two hundred forty".