26542431 has 24 divisors (see below), whose sum is σ = 40634160. Its totient is φ = 17111088.

The previous prime is 26542403. The next prime is 26542433. The reversal of 26542431 is 13424562.

26542431 is a `hidden beast` number, since 2 + 654 + 2 + 4 + 3 + 1 = 666.

It is not a de Polignac number, because 26542431 - 2⁶ = 26542367 is a prime.

It is a super-2 number, since 2×26542431² = 1409001286779522, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a junction number, because it is equal to n+sod(n) for n = 26542395 and 26542404.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26542433) 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, 162756 + ... + 162918.

It is an arithmetic number, because the mean of its divisors is an integer number (1693090).

Almost surely, 2^26542431 is an apocalyptic number.

26542431 is a deficient number, since it is larger than the sum of its proper divisors (14091729).

26542431 is an equidigital number, since it uses as much as digits as its factorization.

26542431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 372 (or 203 counting only the distinct ones).

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

The square root of 26542431 is about 5151.9346851450. The cubic root of 26542431 is about 298.2956354754.

Adding to 26542431 its reverse (13424562), we get a palindrome (39966993).

The spelling of 26542431 in words is "twenty-six million, five hundred forty-two thousand, four hundred thirty-one".