122432240 has 40 divisors (see below), whose sum is σ = 325321440. Its totient is φ = 41976576.

The previous prime is 122432239. The next prime is 122432251. The reversal of 122432240 is 42234221.

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

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 108755 + ... + 109874.

It is an arithmetic number, because the mean of its divisors is an integer number (8133036).

Almost surely, 2^122432240 is an apocalyptic number.

122432240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

122432240 is an abundant number, since it is smaller than the sum of its proper divisors (202889200).

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

122432240 is a wasteful number, since it uses less digits than its factorization.

122432240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 218649 (or 218643 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 20.

The square root of 122432240 is about 11064.9103023929. The cubic root of 122432240 is about 496.5526055708.

Adding to 122432240 its reverse (42234221), we get a palindrome (164666461).

The spelling of 122432240 in words is "one hundred twenty-two million, four hundred thirty-two thousand, two hundred forty".