42221263 has 8 divisors (see below), whose sum is σ = 48346400. Its totient is φ = 36119520.

The previous prime is 42221243. The next prime is 42221269. The reversal of 42221263 is 36212224.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-42221263 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42221269) 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, 1788 + ... + 9361.

It is an arithmetic number, because the mean of its divisors is an integer number (6043300).

Almost surely, 2^42221263 is an apocalyptic number.

42221263 is a deficient number, since it is larger than the sum of its proper divisors (6125137).

42221263 is a wasteful number, since it uses less digits than its factorization.

42221263 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11697.

The product of its digits is 1152, while the sum is 22.

The square root of 42221263 is about 6497.7890855275. The cubic root of 42221263 is about 348.2120052919.

Adding to 42221263 its reverse (36212224), we get a palindrome (78433487).

The spelling of 42221263 in words is "forty-two million, two hundred twenty-one thousand, two hundred sixty-three".