42512263 has 4 divisors (see below), whose sum is σ = 42550288. Its totient is φ = 42474240.

The previous prime is 42512219. The next prime is 42512269. The reversal of 42512263 is 36221524.

42512263 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 42512263 - 2¹³ = 42504071 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42512269) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17283 + ... + 19588.

It is an arithmetic number, because the mean of its divisors is an integer number (10637572).

Almost surely, 2^42512263 is an apocalyptic number.

42512263 is a deficient number, since it is larger than the sum of its proper divisors (38025).

42512263 is a wasteful number, since it uses less digits than its factorization.

42512263 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38024.

The product of its digits is 2880, while the sum is 25.

The square root of 42512263 is about 6520.1428665329. The cubic root of 42512263 is about 349.0101638242.

Adding to 42512263 its reverse (36221524), we get a palindrome (78733787).

The spelling of 42512263 in words is "forty-two million, five hundred twelve thousand, two hundred sixty-three".