842306042 has 4 divisors (see below), whose sum is σ = 1263459066. Its totient is φ = 421153020.

The previous prime is 842306041. The next prime is 842306077. The reversal of 842306042 is 240603248.

842306042 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 can be written as a sum of positive squares in only one way, i.e., 616975921 + 225330121 = 24839^2 + 15011^2 .

It is a super-4 number, since 4×842306042⁴ (a number of 37 digits) contains 4444 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 842305996 and 842306014.

It is not an unprimeable number, because it can be changed into a prime (842306041) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 210576509 + ... + 210576512.

Almost surely, 2^842306042 is an apocalyptic number.

842306042 is a deficient number, since it is larger than the sum of its proper divisors (421153024).

842306042 is a wasteful number, since it uses less digits than its factorization.

842306042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 421153023.

The product of its (nonzero) digits is 9216, while the sum is 29.

The square root of 842306042 is about 29022.5092299064. The cubic root of 842306042 is about 944.4014357541.

The spelling of 842306042 in words is "eight hundred forty-two million, three hundred six thousand, forty-two".