642161246 has 4 divisors (see below), whose sum is σ = 963241872. Its totient is φ = 321080622.

The previous prime is 642161237. The next prime is 642161257.

642161246 is nontrivially palindromic in base 10.

642161246 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 160540310 + ... + 160540313.

It is an arithmetic number, because the mean of its divisors is an integer number (240810468).

Almost surely, 2^642161246 is an apocalyptic number.

642161246 is a deficient number, since it is larger than the sum of its proper divisors (321080626).

642161246 is a wasteful number, since it uses less digits than its factorization.

642161246 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 321080625.

The product of its digits is 13824, while the sum is 32.

The square root of 642161246 is about 25340.9006548702. The cubic root of 642161246 is about 862.7428409813.

The spelling of 642161246 in words is "six hundred forty-two million, one hundred sixty-one thousand, two hundred forty-six".