26201642 has 4 divisors (see below), whose sum is σ = 39302466. Its totient is φ = 13100820.

The previous prime is 26201621. The next prime is 26201647. The reversal of 26201642 is 24610262.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 24611521 + 1590121 = 4961^2 + 1261^2 .

It is not an unprimeable number, because it can be changed into a prime (26201647) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6550409 + ... + 6550412.

Almost surely, 2^26201642 is an apocalyptic number.

26201642 is a deficient number, since it is larger than the sum of its proper divisors (13100824).

26201642 is a wasteful number, since it uses less digits than its factorization.

26201642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13100823.

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

The square root of 26201642 is about 5118.7539499374. The cubic root of 26201642 is about 297.0134862956.

The spelling of 26201642 in words is "twenty-six million, two hundred one thousand, six hundred forty-two".