6642841234 has 4 divisors (see below), whose sum is σ = 9964261854. Its totient is φ = 3321420616.

The previous prime is 6642841217. The next prime is 6642841241. The reversal of 6642841234 is 4321482466.

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., 5845061209 + 797780025 = 76453^2 + 28245^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1660710307 + ... + 1660710310.

Almost surely, 2^6642841234 is an apocalyptic number.

6642841234 is a deficient number, since it is larger than the sum of its proper divisors (3321420620).

6642841234 is a wasteful number, since it uses less digits than its factorization.

6642841234 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3321420619.

The product of its digits is 221184, while the sum is 40.

The square root of 6642841234 is about 81503.6271217423. The cubic root of 6642841234 is about 1879.8273224908.

The spelling of 6642841234 in words is "six billion, six hundred forty-two million, eight hundred forty-one thousand, two hundred thirty-four".