42271623 has 12 divisors (see below), whose sum is σ = 62479560. Its totient is φ = 27525456.

The previous prime is 42271609. The next prime is 42271643. The reversal of 42271623 is 32617224.

It is not a de Polignac number, because 42271623 - 2¹² = 42267527 is a prime.

It is a super-2 number, since 2×42271623² = 3573780222108258, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42271643) 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, 54228 + ... + 55001.

It is an arithmetic number, because the mean of its divisors is an integer number (5206630).

Almost surely, 2^42271623 is an apocalyptic number.

42271623 is a gapful number since it is divisible by the number (43) formed by its first and last digit.

42271623 is a deficient number, since it is larger than the sum of its proper divisors (20207937).

42271623 is a wasteful number, since it uses less digits than its factorization.

42271623 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 109278 (or 109275 counting only the distinct ones).

The product of its digits is 4032, while the sum is 27.

The square root of 42271623 is about 6501.6630949319. The cubic root of 42271623 is about 348.3503951920.

Adding to 42271623 its reverse (32617224), we get a palindrome (74888847).

The spelling of 42271623 in words is "forty-two million, two hundred seventy-one thousand, six hundred twenty-three".