26142247 has 2 divisors, whose sum is σ = 26142248. Its totient is φ = 26142246.

The previous prime is 26142241. The next prime is 26142257. The reversal of 26142247 is 74224162.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 26142247 - 2¹¹ = 26140199 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (26142241) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13071123 + 13071124.

It is an arithmetic number, because the mean of its divisors is an integer number (13071124).

Almost surely, 2^26142247 is an apocalyptic number.

26142247 is a deficient number, since it is larger than the sum of its proper divisors (1).

26142247 is an equidigital number, since it uses as much as digits as its factorization.

26142247 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 26142247 is about 5112.9489533927. The cubic root of 26142247 is about 296.7888888867.

The spelling of 26142247 in words is "twenty-six million, one hundred forty-two thousand, two hundred forty-seven".