42112251 has 8 divisors (see below), whose sum is σ = 62388560. Its totient is φ = 28074816.

The previous prime is 42112211. The next prime is 42112261. The reversal of 42112251 is 15221124.

42112251 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 42112251 - 2⁹ = 42111739 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42112201) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 779830 + ... + 779883.

It is an arithmetic number, because the mean of its divisors is an integer number (7798570).

Almost surely, 2^42112251 is an apocalyptic number.

42112251 is a deficient number, since it is larger than the sum of its proper divisors (20276309).

42112251 is a wasteful number, since it uses less digits than its factorization.

42112251 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1559722 (or 1559716 counting only the distinct ones).

The product of its digits is 160, while the sum is 18.

The square root of 42112251 is about 6489.3952722885. The cubic root of 42112251 is about 347.9120616089.

Adding to 42112251 its reverse (15221124), we get a palindrome (57333375).

The spelling of 42112251 in words is "forty-two million, one hundred twelve thousand, two hundred fifty-one".