42291518 has 16 divisors (see below), whose sum is σ = 65376720. Its totient is φ = 20503296.

The previous prime is 42291517. The next prime is 42291521. The reversal of 42291518 is 81519224.

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 polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 25313 + ... + 26931.

It is an arithmetic number, because the mean of its divisors is an integer number (4086045).

Almost surely, 2^42291518 is an apocalyptic number.

42291518 is a deficient number, since it is larger than the sum of its proper divisors (23085202).

42291518 is a wasteful number, since it uses less digits than its factorization.

42291518 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2011.

The product of its digits is 5760, while the sum is 32.

The square root of 42291518 is about 6503.1929081029. The cubic root of 42291518 is about 348.4050366090.

The spelling of 42291518 in words is "forty-two million, two hundred ninety-one thousand, five hundred eighteen".