42222371 has 4 divisors (see below), whose sum is σ = 42240792. Its totient is φ = 42203952.

The previous prime is 42222353. The next prime is 42222391. The reversal of 42222371 is 17322224.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-42222371 is a prime.

It is a super-2 number, since 2×42222371² = 3565457225723282, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42222311) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5186 + ... + 10551.

It is an arithmetic number, because the mean of its divisors is an integer number (10560198).

Almost surely, 2^42222371 is an apocalyptic number.

42222371 is a deficient number, since it is larger than the sum of its proper divisors (18421).

42222371 is a wasteful number, since it uses less digits than its factorization.

42222371 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18420.

The product of its digits is 1344, while the sum is 23.

The square root of 42222371 is about 6497.8743447377. The cubic root of 42222371 is about 348.2150512731.

Adding to 42222371 its reverse (17322224), we get a palindrome (59544595).

The spelling of 42222371 in words is "forty-two million, two hundred twenty-two thousand, three hundred seventy-one".