42497294 has 16 divisors (see below), whose sum is σ = 72946656. Its totient is φ = 18189600.

The previous prime is 42497293. The next prime is 42497303. The reversal of 42497294 is 49279424.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42497293) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 13424 + ... + 16284.

It is an arithmetic number, because the mean of its divisors is an integer number (4559166).

Almost surely, 2^42497294 is an apocalyptic number.

42497294 is a deficient number, since it is larger than the sum of its proper divisors (30449362).

42497294 is a wasteful number, since it uses less digits than its factorization.

42497294 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3931.

The product of its digits is 145152, while the sum is 41.

The square root of 42497294 is about 6518.9948611730. The cubic root of 42497294 is about 348.9691956731.

The spelling of 42497294 in words is "forty-two million, four hundred ninety-seven thousand, two hundred ninety-four".