26421427 has 2 divisors, whose sum is σ = 26421428. Its totient is φ = 26421426.

The previous prime is 26421377. The next prime is 26421463. The reversal of 26421427 is 72412462.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 26421427 - 2⁷ = 26421299 is a prime.

It is a super-3 number, since 3×26421427³ (a number of 23 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 26421395 and 26421404.

It is not a weakly prime, because it can be changed into another prime (26421487) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13210713 + 13210714.

It is an arithmetic number, because the mean of its divisors is an integer number (13210714).

Almost surely, 2^26421427 is an apocalyptic number.

26421427 is a deficient number, since it is larger than the sum of its proper divisors (1).

26421427 is an equidigital number, since it uses as much as digits as its factorization.

26421427 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5376, while the sum is 28.

The square root of 26421427 is about 5140.1777206630. The cubic root of 26421427 is about 297.8416459695.

Adding to 26421427 its reverse (72412462), we get a palindrome (98833889).

The spelling of 26421427 in words is "twenty-six million, four hundred twenty-one thousand, four hundred twenty-seven".