42947253 has 20 divisors (see below), whose sum is σ = 67931820. Its totient is φ = 26946432.

The previous prime is 42947243. The next prime is 42947257. The reversal of 42947253 is 35274924.

It can be written as a sum of positive squares in 2 ways, for example, as 17363889 + 25583364 = 4167^2 + 5058^2 .

It is not a de Polignac number, because 42947253 - 2¹⁴ = 42930869 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42947257) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 14218 + ... + 16971.

It is an arithmetic number, because the mean of its divisors is an integer number (3396591).

Almost surely, 2^42947253 is an apocalyptic number.

It is an amenable number.

42947253 is a deficient number, since it is larger than the sum of its proper divisors (24984567).

42947253 is a wasteful number, since it uses less digits than its factorization.

42947253 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31218 (or 31209 counting only the distinct ones).

The product of its digits is 60480, while the sum is 36.

The square root of 42947253 is about 6553.4153691034. The cubic root of 42947253 is about 350.1964964653.

The spelling of 42947253 in words is "forty-two million, nine hundred forty-seven thousand, two hundred fifty-three".