42274581 has 4 divisors (see below), whose sum is σ = 56366112. Its totient is φ = 28183052.

The previous prime is 42274579. The next prime is 42274619. The reversal of 42274581 is 18547224.

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 42274581 - 2¹ = 42274579 is a prime.

It is a super-2 number, since 2×42274581² = 3574280397451122, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42274511) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7045761 + ... + 7045766.

It is an arithmetic number, because the mean of its divisors is an integer number (14091528).

Almost surely, 2^42274581 is an apocalyptic number.

It is an amenable number.

42274581 is a deficient number, since it is larger than the sum of its proper divisors (14091531).

42274581 is a wasteful number, since it uses less digits than its factorization.

42274581 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14091530.

The product of its digits is 17920, while the sum is 33.

The square root of 42274581 is about 6501.8905712108. The cubic root of 42274581 is about 348.3585203941.

The spelling of 42274581 in words is "forty-two million, two hundred seventy-four thousand, five hundred eighty-one".