122664440 has 16 divisors (see below), whose sum is σ = 275995080. Its totient is φ = 49065760.

The previous prime is 122664413. The next prime is 122664449. The reversal of 122664440 is 44466221.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122664449) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1533266 + ... + 1533345.

Almost surely, 2^122664440 is an apocalyptic number.

122664440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

122664440 is an abundant number, since it is smaller than the sum of its proper divisors (153330640).

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

122664440 is a wasteful number, since it uses less digits than its factorization.

122664440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3066622 (or 3066618 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 29.

The square root of 122664440 is about 11075.3979612473. The cubic root of 122664440 is about 496.8663211437.

The spelling of 122664440 in words is "one hundred twenty-two million, six hundred sixty-four thousand, four hundred forty".