42215600 has 60 divisors (see below), whose sum is σ = 115919664. Its totient is φ = 14472960.

The previous prime is 42215581. The next prime is 42215617. The reversal of 42215600 is 651224.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4739 + ... + 10338.

Almost surely, 2^42215600 is an apocalyptic number.

42215600 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

42215600 is an abundant number, since it is smaller than the sum of its proper divisors (73704064).

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

42215600 is a wasteful number, since it uses less digits than its factorization.

42215600 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15102 (or 15091 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 20.

The square root of 42215600 is about 6497.3533073091. The cubic root of 42215600 is about 348.1964364164.

Adding to 42215600 its reverse (651224), we get a palindrome (42866824).

The spelling of 42215600 in words is "forty-two million, two hundred fifteen thousand, six hundred".