26142491 has 8 divisors (see below), whose sum is σ = 26501904. Its totient is φ = 25785760.

The previous prime is 26142469. The next prime is 26142503. The reversal of 26142491 is 19424162.

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

It is a cyclic number.

It is not a de Polignac number, because 26142491 - 2¹⁸ = 25880347 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (26162491) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 25301 + ... + 26313.

It is an arithmetic number, because the mean of its divisors is an integer number (3312738).

Almost surely, 2^26142491 is an apocalyptic number.

26142491 is a deficient number, since it is larger than the sum of its proper divisors (359413).

26142491 is a wasteful number, since it uses less digits than its factorization.

26142491 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1341.

The product of its digits is 3456, while the sum is 29.

The square root of 26142491 is about 5112.9728143224. The cubic root of 26142491 is about 296.7898122485.

The spelling of 26142491 in words is "twenty-six million, one hundred forty-two thousand, four hundred ninety-one".