123121121342 has 8 divisors (see below), whose sum is σ = 194401770600. Its totient is φ = 58320531144.

The previous prime is 123121121341. The next prime is 123121121447. The reversal of 123121121342 is 243121121321.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×123121121342² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123121121341) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1620014717 + ... + 1620014792.

It is an arithmetic number, because the mean of its divisors is an integer number (24300221325).

Almost surely, 2^123121121342 is an apocalyptic number.

123121121342 is a deficient number, since it is larger than the sum of its proper divisors (71280649258).

123121121342 is a wasteful number, since it uses less digits than its factorization.

123121121342 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3240029530.

The product of its digits is 576, while the sum is 23.

Adding to 123121121342 its reverse (243121121321), we get a palindrome (366242242663).

The spelling of 123121121342 in words is "one hundred twenty-three billion, one hundred twenty-one million, one hundred twenty-one thousand, three hundred forty-two".