42221310 has 32 divisors (see below), whose sum is σ = 101539872. Its totient is φ = 11235840.

The previous prime is 42221299. The next prime is 42221321. The reversal of 42221310 is 1312224.

It is an interprime number because it is at equal distance from previous prime (42221299) and next prime (42221321).

It is a super-2 number, since 2×42221310² = 3565278036232200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 42221310.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 17370 + ... + 19650.

It is an arithmetic number, because the mean of its divisors is an integer number (3173121).

Almost surely, 2^42221310 is an apocalyptic number.

42221310 is an abundant number, since it is smaller than the sum of its proper divisors (59318562).

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

42221310 is a wasteful number, since it uses less digits than its factorization.

42221310 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2908.

The product of its (nonzero) digits is 96, while the sum is 15.

The square root of 42221310 is about 6497.7927021412. The cubic root of 42221310 is about 348.2121344997.

Adding to 42221310 its reverse (1312224), we get a palindrome (43533534).

The spelling of 42221310 in words is "forty-two million, two hundred twenty-one thousand, three hundred ten".