122923077440 has 112 divisors (see below), whose sum is σ = 300080897424. Its totient is φ = 47933030400.

The previous prime is 122923077377. The next prime is 122923077457. The reversal of 122923077440 is 44770329221.

It can be written as a sum of positive squares in 8 ways, for example, as 3544535296 + 119378542144 = 59536^2 + 345512^2 .

It is a super-2 number, since 2×122923077440² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (41).

It is a congruent number.

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, 22261880 + ... + 22267400.

It is an arithmetic number, because the mean of its divisors is an integer number (2679293727).

Almost surely, 2^122923077440 is an apocalyptic number.

122923077440 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 122923077440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (150040448712).

122923077440 is an abundant number, since it is smaller than the sum of its proper divisors (177157819984).

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

122923077440 is a wasteful number, since it uses less digits than its factorization.

122923077440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7276 (or 7266 counting only the distinct ones).

The product of its (nonzero) digits is 169344, while the sum is 41.

The spelling of 122923077440 in words is "one hundred twenty-two billion, nine hundred twenty-three million, seventy-seven thousand, four hundred forty".