122380345542 has 256 divisors, whose sum is σ = 331540070400. Its totient is φ = 29210388480.

The previous prime is 122380345531. The next prime is 122380345667. The reversal of 122380345542 is 245543083221.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a self number, because there is not a number n which added to its sum of digits gives 122380345542.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 25403518 + ... + 25408334.

It is an arithmetic number, because the mean of its divisors is an integer number (1295078400).

Almost surely, 2^122380345542 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 122380345542, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (165770035200).

122380345542 is an abundant number, since it is smaller than the sum of its proper divisors (209159724858).

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

122380345542 is a wasteful number, since it uses less digits than its factorization.

122380345542 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4971.

The product of its (nonzero) digits is 230400, while the sum is 39.

The spelling of 122380345542 in words is "one hundred twenty-two billion, three hundred eighty million, three hundred forty-five thousand, five hundred forty-two".