123122423442 has 32 divisors (see below), whose sum is σ = 253052946432. Its totient is φ = 39907465344.

The previous prime is 123122423441. The next prime is 123122423447. The reversal of 123122423442 is 244324221321.

It is a super-2 number, since 2×123122423442² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (123122423441) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 202438 + ... + 535934.

It is an arithmetic number, because the mean of its divisors is an integer number (7907904576).

Almost surely, 2^123122423442 is an apocalyptic number.

123122423442 is an abundant number, since it is smaller than the sum of its proper divisors (129930522990).

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

123122423442 is a wasteful number, since it uses less digits than its factorization.

123122423442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 335202.

The product of its digits is 18432, while the sum is 30.

Adding to 123122423442 its reverse (244324221321), we get a palindrome (367446644763).

The spelling of 123122423442 in words is "one hundred twenty-three billion, one hundred twenty-two million, four hundred twenty-three thousand, four hundred forty-two".