122746732240 has 160 divisors (see below), whose sum is σ = 319243959936. Its totient is φ = 43511470080.

The previous prime is 122746732237. The next prime is 122746732243. The reversal of 122746732240 is 42237647221.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (122746732237) and next prime (122746732243).

It is a Harshad number since it is a multiple of its sum of digits (40).

It is a junction number, because it is equal to n+sod(n) for n = 122746732193 and 122746732202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122746732243) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 7314099 + ... + 7330861.

Almost surely, 2^122746732240 is an apocalyptic number.

122746732240 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 122746732240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (159621979968).

122746732240 is an abundant number, since it is smaller than the sum of its proper divisors (196497227696).

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

122746732240 is a wasteful number, since it uses less digits than its factorization.

122746732240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16997 (or 16991 counting only the distinct ones).

The product of its (nonzero) digits is 225792, while the sum is 40.

The spelling of 122746732240 in words is "one hundred twenty-two billion, seven hundred forty-six million, seven hundred thirty-two thousand, two hundred forty".