26042621 has 4 divisors (see below), whose sum is σ = 28410144. Its totient is φ = 23675100.

The previous prime is 26042593. The next prime is 26042633. The reversal of 26042621 is 12624062.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 26042621 - 2¹⁸ = 25780477 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 (26042671) 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, 1183745 + ... + 1183766.

It is an arithmetic number, because the mean of its divisors is an integer number (7102536).

Almost surely, 2^26042621 is an apocalyptic number.

It is an amenable number.

26042621 is a deficient number, since it is larger than the sum of its proper divisors (2367523).

26042621 is a wasteful number, since it uses less digits than its factorization.

26042621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2367522.

The product of its (nonzero) digits is 1152, while the sum is 23.

The square root of 26042621 is about 5103.1971351301. The cubic root of 26042621 is about 296.4113960892.

Adding to 26042621 its reverse (12624062), we get a palindrome (38666683).

It can be divided in two parts, 2604 and 2621, that added together give a palindrome (5225).

The spelling of 26042621 in words is "twenty-six million, forty-two thousand, six hundred twenty-one".