6442642026 has 24 divisors (see below), whose sum is σ = 13960930464. Its totient is φ = 2147259240.

The previous prime is 6442642021. The next prime is 6442642081. The reversal of 6442642026 is 6202462446.

6442642026 is a `hidden beast` number, since 6 + 4 + 4 + 2 + 642 + 0 + 2 + 6 = 666.

It is not an unprimeable number, because it can be changed into a prime (6442642021) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 146691 + ... + 185481.

It is an arithmetic number, because the mean of its divisors is an integer number (581705436).

Almost surely, 2^6442642026 is an apocalyptic number.

6442642026 is an abundant number, since it is smaller than the sum of its proper divisors (7518288438).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

6442642026 is a wasteful number, since it uses less digits than its factorization.

6442642026 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48026 (or 48023 counting only the distinct ones).

The product of its (nonzero) digits is 110592, while the sum is 36.

The square root of 6442642026 is about 80266.0702040408. The cubic root of 6442642026 is about 1860.7498832048.

The spelling of 6442642026 in words is "six billion, four hundred forty-two million, six hundred forty-two thousand, twenty-six".