122562640 has 20 divisors (see below), whose sum is σ = 284958324. Its totient is φ = 49025024.

The previous prime is 122562637. The next prime is 122562641. The reversal of 122562640 is 46265221.

It can be written as a sum of positive squares in 2 ways, for example, as 40043584 + 82519056 = 6328^2 + 9084^2 .

It is a tau number, because it is divible by the number of its divisors (20).

It is a super-3 number, since 3×122562640³ (a number of 25 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 122562599 and 122562608.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122562641) 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 3 ways as a sum of consecutive naturals, for example, 765937 + ... + 766096.

Almost surely, 2^122562640 is an apocalyptic number.

122562640 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

122562640 is an abundant number, since it is smaller than the sum of its proper divisors (162395684).

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

122562640 is a wasteful number, since it uses less digits than its factorization.

122562640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1532046 (or 1532040 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 28.

The square root of 122562640 is about 11070.8012356830. The cubic root of 122562640 is about 496.7288322609.

It can be divided in two parts, 12 and 2562640, that added together give a palindrome (2562652).

The spelling of 122562640 in words is "one hundred twenty-two million, five hundred sixty-two thousand, six hundred forty".