42620265 has 24 divisors (see below), whose sum is σ = 77088960. Its totient is φ = 21741984.

The previous prime is 42620239. The next prime is 42620269. The reversal of 42620265 is 56202624.

It is not a de Polignac number, because 42620265 - 2⁵ = 42620233 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (42620269) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 19555 + ... + 21624.

It is an arithmetic number, because the mean of its divisors is an integer number (3212040).

Almost surely, 2^42620265 is an apocalyptic number.

42620265 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

It is an amenable number.

42620265 is a deficient number, since it is larger than the sum of its proper divisors (34468695).

42620265 is a wasteful number, since it uses less digits than its factorization.

42620265 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41213 (or 41210 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 27.

The square root of 42620265 is about 6528.4197934875. The cubic root of 42620265 is about 349.3054662286.

Adding to 42620265 its reverse (56202624), we get a palindrome (98822889).

The spelling of 42620265 in words is "forty-two million, six hundred twenty thousand, two hundred sixty-five".