122742267500 has 120 divisors (see below), whose sum is σ = 274331785728. Its totient is φ = 48026088000.

The previous prime is 122742267451. The next prime is 122742267503. The reversal of 122742267500 is 5762247221.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (122742267503) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 21369629 + ... + 21375371.

Almost surely, 2^122742267500 is an apocalyptic number.

122742267500 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 122742267500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (137165892864).

122742267500 is an abundant number, since it is smaller than the sum of its proper divisors (151589518228).

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

122742267500 is a wasteful number, since it uses less digits than its factorization.

122742267500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5953 (or 5936 counting only the distinct ones).

The product of its (nonzero) digits is 94080, while the sum is 38.

The spelling of 122742267500 in words is "one hundred twenty-two billion, seven hundred forty-two million, two hundred sixty-seven thousand, five hundred".