83810042 has 4 divisors (see below), whose sum is σ = 125715066. Its totient is φ = 41905020.

The previous prime is 83810021. The next prime is 83810047. The reversal of 83810042 is 24001838.

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., 53129521 + 30680521 = 7289^2 + 5539^2 .

It is a junction number, because it is equal to n+sod(n) for n = 83809993 and 83810020.

It is not an unprimeable number, because it can be changed into a prime (83810047) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20952509 + ... + 20952512.

Almost surely, 2^83810042 is an apocalyptic number.

83810042 is a deficient number, since it is larger than the sum of its proper divisors (41905024).

83810042 is a wasteful number, since it uses less digits than its factorization.

83810042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41905023.

The product of its (nonzero) digits is 1536, while the sum is 26.

The square root of 83810042 is about 9154.7824660120. The cubic root of 83810042 is about 437.6215359761.

The spelling of 83810042 in words is "eighty-three million, eight hundred ten thousand, forty-two".