63842131 has 4 divisors (see below), whose sum is σ = 65567632. Its totient is φ = 62116632.

The previous prime is 63842117. The next prime is 63842153. The reversal of 63842131 is 13124836.

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 63842131 - 2⁵ = 63842099 is a prime.

It is a super-2 number, since 2×63842131² = 8151635381242322, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 63842131.

It is not an unprimeable number, because it can be changed into a prime (63842431) 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, 862695 + ... + 862768.

It is an arithmetic number, because the mean of its divisors is an integer number (16391908).

Almost surely, 2^63842131 is an apocalyptic number.

63842131 is a deficient number, since it is larger than the sum of its proper divisors (1725501).

63842131 is a wasteful number, since it uses less digits than its factorization.

63842131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1725500.

The product of its digits is 3456, while the sum is 28.

The square root of 63842131 is about 7990.1270953596. The cubic root of 63842131 is about 399.6708354511.

Adding to 63842131 its reverse (13124836), we get a palindrome (76966967).

It can be divided in two parts, 6384 and 2131, that added together give a triangular number (8515 = T₁₃₀).

The spelling of 63842131 in words is "sixty-three million, eight hundred forty-two thousand, one hundred thirty-one".