42215660 has 24 divisors (see below), whose sum is σ = 90108816. Its totient is φ = 16608960.

The previous prime is 42215659. The next prime is 42215671. The reversal of 42215660 is 6651224.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16082 + ... + 18521.

It is an arithmetic number, because the mean of its divisors is an integer number (3754534).

Almost surely, 2^42215660 is an apocalyptic number.

It is an amenable number.

42215660 is an abundant number, since it is smaller than the sum of its proper divisors (47893156).

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

42215660 is a wasteful number, since it uses less digits than its factorization.

42215660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34673 (or 34671 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 26.

The square root of 42215660 is about 6497.3579245721. The cubic root of 42215660 is about 348.1966013773.

Adding to 42215660 its reverse (6651224), we get a palindrome (48866884).

It can be divided in two parts, 42215 and 660, that added together give a cube (42875 = 35³).

The spelling of 42215660 in words is "forty-two million, two hundred fifteen thousand, six hundred sixty".