42249315 has 16 divisors (see below), whose sum is σ = 67680000. Its totient is φ = 22505952.

The previous prime is 42249313. The next prime is 42249341. The reversal of 42249315 is 51394224.

It is not a de Polignac number, because 42249315 - 2¹ = 42249313 is a prime.

It is not an unprimeable number, because it can be changed into a prime (42249313) 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 15 ways as a sum of consecutive naturals, for example, 21546 + ... + 23424.

It is an arithmetic number, because the mean of its divisors is an integer number (4230000).

Almost surely, 2^42249315 is an apocalyptic number.

42249315 is a deficient number, since it is larger than the sum of its proper divisors (25430685).

42249315 is a wasteful number, since it uses less digits than its factorization.

42249315 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3386.

The product of its digits is 8640, while the sum is 30.

The square root of 42249315 is about 6499.9473074787. The cubic root of 42249315 is about 348.2891061013.

The spelling of 42249315 in words is "forty-two million, two hundred forty-nine thousand, three hundred fifteen".