42111012 has 12 divisors (see below), whose sum is σ = 98259056. Its totient is φ = 14037000.

The previous prime is 42111007. The next prime is 42111053. The reversal of 42111012 is 21011124.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (12).

It is a Harshad number since it is a multiple of its sum of digits (12), and also a Moran number because the ratio is a prime number: 3509251 = 42111012 / (4 + 2 + 1 + 1 + 1 + 0 + 1 + 2).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1754614 + ... + 1754637.

Almost surely, 2^42111012 is an apocalyptic number.

It is an amenable number.

42111012 is an abundant number, since it is smaller than the sum of its proper divisors (56148044).

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

42111012 is a wasteful number, since it uses less digits than its factorization.

42111012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3509258 (or 3509256 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 12.

The square root of 42111012 is about 6489.2998081457. The cubic root of 42111012 is about 347.9086495593.

Adding to 42111012 its reverse (21011124), we get a palindrome (63122136).

The spelling of 42111012 in words is "forty-two million, one hundred eleven thousand, twelve".