42418265 has 4 divisors (see below), whose sum is σ = 50901924. Its totient is φ = 33934608.

The previous prime is 42418219. The next prime is 42418267. The reversal of 42418265 is 56281424.

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 6574096 + 35844169 = 2564^2 + 5987^2 .

It is a cyclic number.

It is not a de Polignac number, because 42418265 - 2¹⁴ = 42401881 is a prime.

It is a super-2 number, since 2×42418265² = 3598618411220450, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42418267) 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, 4241822 + ... + 4241831.

It is an arithmetic number, because the mean of its divisors is an integer number (12725481).

Almost surely, 2^42418265 is an apocalyptic number.

It is an amenable number.

42418265 is a deficient number, since it is larger than the sum of its proper divisors (8483659).

42418265 is an equidigital number, since it uses as much as digits as its factorization.

42418265 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8483658.

The product of its digits is 15360, while the sum is 32.

The square root of 42418265 is about 6512.9305999680. The cubic root of 42418265 is about 348.7527442477.

Adding to 42418265 its reverse (56281424), we get a palindrome (98699689).

The spelling of 42418265 in words is "forty-two million, four hundred eighteen thousand, two hundred sixty-five".