122531440 has 40 divisors (see below), whose sum is σ = 285472800. Its totient is φ = 48911616.

The previous prime is 122531429. The next prime is 122531441. The reversal of 122531440 is 44135221.

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

It is a super-3 number, since 3×122531440³ (a number of 25 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122531441) 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, 46642 + ... + 49198.

It is an arithmetic number, because the mean of its divisors is an integer number (7136820).

Almost surely, 2^122531440 is an apocalyptic number.

122531440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

122531440 is an abundant number, since it is smaller than the sum of its proper divisors (162941360).

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

122531440 is a wasteful number, since it uses less digits than its factorization.

122531440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3169 (or 3163 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 22.

The square root of 122531440 is about 11069.3920338924. The cubic root of 122531440 is about 496.6866789728.

Adding to 122531440 its reverse (44135221), we get a palindrome (166666661).

The spelling of 122531440 in words is "one hundred twenty-two million, five hundred thirty-one thousand, four hundred forty".