42251075 has 6 divisors (see below), whose sum is σ = 52391364. Its totient is φ = 33800840.

The previous prime is 42251009. The next prime is 42251089. The reversal of 42251075 is 57015224.

It is not a de Polignac number, because 42251075 - 2¹⁰ = 42250051 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 844997 + ... + 845046.

It is an arithmetic number, because the mean of its divisors is an integer number (8731894).

Almost surely, 2^42251075 is an apocalyptic number.

42251075 is a deficient number, since it is larger than the sum of its proper divisors (10140289).

42251075 is a wasteful number, since it uses less digits than its factorization.

42251075 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1690053 (or 1690048 counting only the distinct ones).

The product of its (nonzero) digits is 2800, while the sum is 26.

The square root of 42251075 is about 6500.0826917817. The cubic root of 42251075 is about 348.2939423163.

Adding to 42251075 its reverse (57015224), we get a palindrome (99266299).

The spelling of 42251075 in words is "forty-two million, two hundred fifty-one thousand, seventy-five".