42291516 has 24 divisors (see below), whose sum is σ = 99437184. Its totient is φ = 13989040.

The previous prime is 42291497. The next prime is 42291517. The reversal of 42291516 is 61519224.

It is a hoax number, since the sum of its digits (30) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42291517) 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, 11880 + ... + 15023.

It is an arithmetic number, because the mean of its divisors is an integer number (4143216).

Almost surely, 2^42291516 is an apocalyptic number.

It is an amenable number.

42291516 is an abundant number, since it is smaller than the sum of its proper divisors (57145668).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

42291516 is a wasteful number, since it uses less digits than its factorization.

42291516 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27041 (or 27039 counting only the distinct ones).

The product of its digits is 4320, while the sum is 30.

The square root of 42291516 is about 6503.1927543323. The cubic root of 42291516 is about 348.4050311169.

The spelling of 42291516 in words is "forty-two million, two hundred ninety-one thousand, five hundred sixteen".