26130421 has 8 divisors (see below), whose sum is σ = 27232920. Its totient is φ = 25041408.

The previous prime is 26130409. The next prime is 26130493. The reversal of 26130421 is 12403162.

It can be written as a sum of positive squares in 4 ways, for example, as 13242321 + 12888100 = 3639^2 + 3590^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 26130421 - 2¹⁷ = 25999349 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 (26130121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 685 + ... + 7261.

It is an arithmetic number, because the mean of its divisors is an integer number (3404115).

Almost surely, 2^26130421 is an apocalyptic number.

It is an amenable number.

26130421 is a deficient number, since it is larger than the sum of its proper divisors (1102499).

26130421 is a wasteful number, since it uses less digits than its factorization.

26130421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6743.

The product of its (nonzero) digits is 288, while the sum is 19.

The square root of 26130421 is about 5111.7923471127. The cubic root of 26130421 is about 296.7441292200.

Adding to 26130421 its reverse (12403162), we get a palindrome (38533583).

The spelling of 26130421 in words is "twenty-six million, one hundred thirty thousand, four hundred twenty-one".