42215586 has 16 divisors (see below), whose sum is σ = 96492864. Its totient is φ = 12061584.

The previous prime is 42215581. The next prime is 42215617. The reversal of 42215586 is 68551224.

It is not an unprimeable number, because it can be changed into a prime (42215581) 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, 502525 + ... + 502608.

It is an arithmetic number, because the mean of its divisors is an integer number (6030804).

Almost surely, 2^42215586 is an apocalyptic number.

42215586 is an abundant number, since it is smaller than the sum of its proper divisors (54277278).

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

42215586 is a wasteful number, since it uses less digits than its factorization.

42215586 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1005145.

The product of its digits is 19200, while the sum is 33.

The square root of 42215586 is about 6497.3522299472. The cubic root of 42215586 is about 348.1963979255.

The spelling of 42215586 in words is "forty-two million, two hundred fifteen thousand, five hundred eighty-six".