26202139 has 4 divisors (see below), whose sum is σ = 26245224. Its totient is φ = 26159056.

The previous prime is 26202119. The next prime is 26202149. The reversal of 26202139 is 93120262.

It is a happy number.

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 26202139 - 2⁵ = 26202107 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (26202119) 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, 20617 + ... + 21850.

It is an arithmetic number, because the mean of its divisors is an integer number (6561306).

Almost surely, 2^26202139 is an apocalyptic number.

26202139 is a deficient number, since it is larger than the sum of its proper divisors (43085).

26202139 is an equidigital number, since it uses as much as digits as its factorization.

26202139 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43084.

The product of its (nonzero) digits is 1296, while the sum is 25.

The square root of 26202139 is about 5118.8024966783. The cubic root of 26202139 is about 297.0153642284.

The spelling of 26202139 in words is "twenty-six million, two hundred two thousand, one hundred thirty-nine".