42265577 has 4 divisors (see below), whose sum is σ = 42280836. Its totient is φ = 42250320.

The previous prime is 42265567. The next prime is 42265579. The reversal of 42265577 is 77556224.

It is a happy number.

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 2019241 + 40246336 = 1421^2 + 6344^2 .

It is a cyclic number.

It is not a de Polignac number, because 42265577 - 2¹⁰ = 42264553 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 42265577.

It is not an unprimeable number, because it can be changed into a prime (42265579) 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, 2174 + ... + 9447.

It is an arithmetic number, because the mean of its divisors is an integer number (10570209).

Almost surely, 2^42265577 is an apocalyptic number.

It is an amenable number.

42265577 is a deficient number, since it is larger than the sum of its proper divisors (15259).

42265577 is a wasteful number, since it uses less digits than its factorization.

42265577 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15258.

The product of its digits is 117600, while the sum is 38.

The square root of 42265577 is about 6501.1981203467. The cubic root of 42265577 is about 348.3337865173. Note that the first 3 decimals are identical.

The spelling of 42265577 in words is "forty-two million, two hundred sixty-five thousand, five hundred seventy-seven".