122140464 has 80 divisors (see below), whose sum is σ = 323586432. Its totient is φ = 39688704.

The previous prime is 122140439. The next prime is 122140477. The reversal of 122140464 is 464041221.

It is a happy number.

It is a super-2 number, since 2×122140464² = 29836585892270592, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 524092 + ... + 524324.

Almost surely, 2^122140464 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 122140464, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (161793216).

122140464 is an abundant number, since it is smaller than the sum of its proper divisors (201445968).

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

122140464 is a wasteful number, since it uses less digits than its factorization.

122140464 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 474 (or 468 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 24.

The square root of 122140464 is about 11051.7176945487. The cubic root of 122140464 is about 496.1578365180.

Adding to 122140464 its reverse (464041221), we get a palindrome (586181685).

The spelling of 122140464 in words is "one hundred twenty-two million, one hundred forty thousand, four hundred sixty-four".