642134383 has 4 divisors (see below), whose sum is σ = 700510248. Its totient is φ = 583758520.

The previous prime is 642134329. The next prime is 642134407. The reversal of 642134383 is 383431246.

642134383 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 cyclic number.

It is not a de Polignac number, because 642134383 - 2¹⁷ = 642003311 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (642134483) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 29187916 + ... + 29187937.

It is an arithmetic number, because the mean of its divisors is an integer number (175127562).

Almost surely, 2^642134383 is an apocalyptic number.

642134383 is a deficient number, since it is larger than the sum of its proper divisors (58375865).

642134383 is a wasteful number, since it uses less digits than its factorization.

642134383 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 58375864.

The product of its digits is 41472, while the sum is 34.

The square root of 642134383 is about 25340.3706168635. The cubic root of 642134383 is about 862.7308106778.

It can be divided in two parts, 6421 and 34383, that added together give a palindrome (40804).

The spelling of 642134383 in words is "six hundred forty-two million, one hundred thirty-four thousand, three hundred eighty-three".