42120041212 has 6 divisors (see below), whose sum is σ = 73710072128. Its totient is φ = 21060020604.

The previous prime is 42120041209. The next prime is 42120041221. The reversal of 42120041212 is 21214002124.

It is a self number, because there is not a number n which added to its sum of digits gives 42120041212.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5265005148 + ... + 5265005155.

Almost surely, 2^42120041212 is an apocalyptic number.

It is an amenable number.

42120041212 is a deficient number, since it is larger than the sum of its proper divisors (31590030916).

42120041212 is a wasteful number, since it uses less digits than its factorization.

42120041212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10530010307 (or 10530010305 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 19.

Adding to 42120041212 its reverse (21214002124), we get a palindrome (63334043336).

The spelling of 42120041212 in words is "forty-two billion, one hundred twenty million, forty-one thousand, two hundred twelve".