42248691 has 12 divisors (see below), whose sum is σ = 62994880. Its totient is φ = 27257040.

The previous prime is 42248681. The next prime is 42248693. The reversal of 42248691 is 19684224.

42248691 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 42248691 - 2¹¹ = 42246643 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42248693) 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 11 ways as a sum of consecutive naturals, for example, 75436 + ... + 75993.

Almost surely, 2^42248691 is an apocalyptic number.

42248691 is a deficient number, since it is larger than the sum of its proper divisors (20746189).

42248691 is a wasteful number, since it uses less digits than its factorization.

42248691 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 151466 (or 151463 counting only the distinct ones).

The product of its digits is 27648, while the sum is 36.

The square root of 42248691 is about 6499.8993069124. The cubic root of 42248691 is about 348.2873914110.

The spelling of 42248691 in words is "forty-two million, two hundred forty-eight thousand, six hundred ninety-one".