42243071 has 12 divisors (see below), whose sum is σ = 46814328. Its totient is φ = 38080224.

The previous prime is 42243041. The next prime is 42243077. The reversal of 42243071 is 17034224.

It is not a de Polignac number, because 42243071 - 2⁶ = 42243007 is a prime.

It is a super-2 number, since 2×42243071² = 3568954095022082, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42243077) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4361 + ... + 10173.

It is an arithmetic number, because the mean of its divisors is an integer number (3901194).

Almost surely, 2^42243071 is an apocalyptic number.

42243071 is a deficient number, since it is larger than the sum of its proper divisors (4571257).

42243071 is a wasteful number, since it uses less digits than its factorization.

42243071 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5882 (or 5869 counting only the distinct ones).

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

The square root of 42243071 is about 6499.4669781452. The cubic root of 42243071 is about 348.2719474458.

Adding to 42243071 its reverse (17034224), we get a palindrome (59277295).

The spelling of 42243071 in words is "forty-two million, two hundred forty-three thousand, seventy-one".