42273249 has 4 divisors (see below), whose sum is σ = 56364336. Its totient is φ = 28182164.

The previous prime is 42273223. The next prime is 42273251. The reversal of 42273249 is 94237224.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 42273249 - 2¹³ = 42265057 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (42273269) 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, 7045539 + ... + 7045544.

It is an arithmetic number, because the mean of its divisors is an integer number (14091084).

Almost surely, 2^42273249 is an apocalyptic number.

It is an amenable number.

42273249 is a deficient number, since it is larger than the sum of its proper divisors (14091087).

42273249 is a wasteful number, since it uses less digits than its factorization.

42273249 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14091086.

The product of its digits is 24192, while the sum is 33.

The square root of 42273249 is about 6501.7881386585. The cubic root of 42273249 is about 348.3548616279.

The spelling of 42273249 in words is "forty-two million, two hundred seventy-three thousand, two hundred forty-nine".