122313215405442 has 64 divisors (see below), whose sum is σ = 257622326968320. Its totient is φ = 38607107220864.

The previous prime is 122313215405419. The next prime is 122313215405477. The reversal of 122313215405442 is 244504512313221.

It is a self number, because there is not a number n which added to its sum of digits gives 122313215405442.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2338077478 + ... + 2338129790.

It is an arithmetic number, because the mean of its divisors is an integer number (4025348858880).

Almost surely, 2^{122313215405442} is an apocalyptic number.

122313215405442 is an abundant number, since it is smaller than the sum of its proper divisors (135309111562878).

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

122313215405442 is a wasteful number, since it uses less digits than its factorization.

122313215405442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61567.

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

Adding to 122313215405442 its reverse (244504512313221), we get a palindrome (366817727718663).

The spelling of 122313215405442 in words is "one hundred twenty-two trillion, three hundred thirteen billion, two hundred fifteen million, four hundred five thousand, four hundred forty-two".