42121111342 has 32 divisors (see below), whose sum is σ = 64785853440. Its totient is φ = 20532445920.

The previous prime is 42121111273. The next prime is 42121111379. The reversal of 42121111342 is 24311112124.

It is a super-2 number, since 2×42121111342² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12598123 + ... + 12601465.

It is an arithmetic number, because the mean of its divisors is an integer number (2024557920).

Almost surely, 2^42121111342 is an apocalyptic number.

42121111342 is a deficient number, since it is larger than the sum of its proper divisors (22664742098).

42121111342 is a wasteful number, since it uses less digits than its factorization.

42121111342 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4288.

The product of its digits is 384, while the sum is 22.

Adding to 42121111342 its reverse (24311112124), we get a palindrome (66432223466).

The spelling of 42121111342 in words is "forty-two billion, one hundred twenty-one million, one hundred eleven thousand, three hundred forty-two".