42121212124 has 12 divisors (see below), whose sum is σ = 73748040184. Its totient is φ = 21050343504.

The previous prime is 42121212097. The next prime is 42121212163.

42121212124 is nontrivially palindromic in base 10.

It is a nude number because it is divisible by every one of its digits.

It is a junction number, because it is equal to n+sod(n) for n = 42121212095 and 42121212104.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2556402 + ... + 2572825.

Almost surely, 2^42121212124 is an apocalyptic number.

It is an amenable number.

42121212124 is a deficient number, since it is larger than the sum of its proper divisors (31626828060).

42121212124 is a wasteful number, since it uses less digits than its factorization.

42121212124 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5131284 (or 5131282 counting only the distinct ones).

The product of its digits is 512, while the sum is 22.

The spelling of 42121212124 in words is "forty-two billion, one hundred twenty-one million, two hundred twelve thousand, one hundred twenty-four".