26004131 has 4 divisors (see below), whose sum is σ = 26039064. Its totient is φ = 25969200.

The previous prime is 26004119. The next prime is 26004137. The reversal of 26004131 is 13140062.

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 26004131 - 2¹⁸ = 25741987 is a prime.

It is a super-2 number, since 2×26004131² = 1352429658130322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (26004137) 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, 16325 + ... + 17846.

It is an arithmetic number, because the mean of its divisors is an integer number (6509766).

Almost surely, 2^26004131 is an apocalyptic number.

26004131 is a deficient number, since it is larger than the sum of its proper divisors (34933).

26004131 is an equidigital number, since it uses as much as digits as its factorization.

26004131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34932.

The product of its (nonzero) digits is 144, while the sum is 17.

The square root of 26004131 is about 5099.4245753810. The cubic root of 26004131 is about 296.2652958448.

Adding to 26004131 its reverse (13140062), we get a palindrome (39144193).

The spelling of 26004131 in words is "twenty-six million, four thousand, one hundred thirty-one".