122023440 has 480 divisors, whose sum is σ = 534822912. Its totient is φ = 24192000.

The previous prime is 122023423. The next prime is 122023457. The reversal of 122023440 is 44320221.

122023440 is a `hidden beast` number, since 1 + 220 + 2 + 3 + 440 = 666.

It is an interprime number because it is at equal distance from previous prime (122023423) and next prime (122023457).

It is a Harshad number since it is a multiple of its sum of digits (18).

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 95 ways as a sum of consecutive naturals, for example, 1718605 + ... + 1718675.

Almost surely, 2^122023440 is an apocalyptic number.

122023440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 122023440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (267411456).

122023440 is an abundant number, since it is smaller than the sum of its proper divisors (412799472).

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

122023440 is a wasteful number, since it uses less digits than its factorization.

122023440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 139 (or 130 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 18.

The square root of 122023440 is about 11046.4220451692. The cubic root of 122023440 is about 495.9993279561. Note that the first 3 decimals are identical.

Adding to 122023440 its reverse (44320221), we get a palindrome (166343661).

The spelling of 122023440 in words is "one hundred twenty-two million, twenty-three thousand, four hundred forty".