42265247 has 4 divisors (see below), whose sum is σ = 44751456. Its totient is φ = 39779040.

The previous prime is 42265243. The next prime is 42265271. The reversal of 42265247 is 74256224.

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

It is a cyclic number.

It is not a de Polignac number, because 42265247 - 2² = 42265243 is a prime.

It is a super-2 number, since 2×42265247² = 3572702207942018, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42265241) 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, 1243079 + ... + 1243112.

It is an arithmetic number, because the mean of its divisors is an integer number (11187864).

Almost surely, 2^42265247 is an apocalyptic number.

42265247 is a deficient number, since it is larger than the sum of its proper divisors (2486209).

42265247 is a wasteful number, since it uses less digits than its factorization.

42265247 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2486208.

The product of its digits is 26880, while the sum is 32.

The square root of 42265247 is about 6501.1727403600. The cubic root of 42265247 is about 348.3328799447.

The spelling of 42265247 in words is "forty-two million, two hundred sixty-five thousand, two hundred forty-seven".