26042431 has 4 divisors (see below), whose sum is σ = 26431192. Its totient is φ = 25653672.

The previous prime is 26042411. The next prime is 26042441. The reversal of 26042431 is 13424062.

It is a happy number.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-26042431 is a prime.

It is a super-2 number, since 2×26042431² = 1356416424779522, 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 (26042411) 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, 194280 + ... + 194413.

It is an arithmetic number, because the mean of its divisors is an integer number (6607798).

Almost surely, 2^26042431 is an apocalyptic number.

26042431 is a deficient number, since it is larger than the sum of its proper divisors (388761).

26042431 is an equidigital number, since it uses as much as digits as its factorization.

26042431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 388760.

The product of its (nonzero) digits is 1152, while the sum is 22.

The square root of 26042431 is about 5103.1785193152. The cubic root of 26042431 is about 296.4106752414.

Adding to 26042431 its reverse (13424062), we get a palindrome (39466493).

The spelling of 26042431 in words is "twenty-six million, forty-two thousand, four hundred thirty-one".