42271253 has 4 divisors (see below), whose sum is σ = 42289548. Its totient is φ = 42252960.

The previous prime is 42271247. The next prime is 42271277. The reversal of 42271253 is 35217224.

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

It can be written as a sum of positive squares in 2 ways, for example, as 30724849 + 11546404 = 5543^2 + 3398^2 .

It is a cyclic number.

It is not a de Polignac number, because 42271253 - 2⁴ = 42271237 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 (42271223) 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, 5078 + ... + 10503.

It is an arithmetic number, because the mean of its divisors is an integer number (10572387).

Almost surely, 2^42271253 is an apocalyptic number.

It is an amenable number.

42271253 is a deficient number, since it is larger than the sum of its proper divisors (18295).

42271253 is a wasteful number, since it uses less digits than its factorization.

42271253 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18294.

The product of its digits is 3360, while the sum is 26.

The square root of 42271253 is about 6501.6346406115. The cubic root of 42271253 is about 348.3493788284.

Adding to 42271253 its reverse (35217224), we get a palindrome (77488477).

It can be divided in two parts, 42271 and 253, that added together give a palindrome (42524).

The spelling of 42271253 in words is "forty-two million, two hundred seventy-one thousand, two hundred fifty-three".