26420642 has 8 divisors (see below), whose sum is σ = 39779100. Its totient is φ = 13160944.

The previous prime is 26420623. The next prime is 26420651. The reversal of 26420642 is 24602462.

It can be written as a sum of positive squares in 2 ways, for example, as 21353641 + 5067001 = 4621^2 + 2251^2 .

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 24017 + ... + 25092.

Almost surely, 2^26420642 is an apocalyptic number.

26420642 is a deficient number, since it is larger than the sum of its proper divisors (13358458).

26420642 is a wasteful number, since it uses less digits than its factorization.

26420642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49380.

The product of its (nonzero) digits is 4608, while the sum is 26.

The square root of 26420642 is about 5140.1013608683. The cubic root of 26420642 is about 297.8386962423.

The spelling of 26420642 in words is "twenty-six million, four hundred twenty thousand, six hundred forty-two".