849937042 has 4 divisors (see below), whose sum is σ = 1274905566. Its totient is φ = 424968520.

The previous prime is 849937031. The next prime is 849937043. The reversal of 849937042 is 240739948.

It is a happy number.

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., 829497601 + 20439441 = 28801^2 + 4521^2 .

It is a junction number, because it is equal to n+sod(n) for n = 849936983 and 849937001.

It is not an unprimeable number, because it can be changed into a prime (849937043) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 212484259 + ... + 212484262.

Almost surely, 2^849937042 is an apocalyptic number.

849937042 is a deficient number, since it is larger than the sum of its proper divisors (424968524).

849937042 is a wasteful number, since it uses less digits than its factorization.

849937042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 424968523.

The product of its (nonzero) digits is 435456, while the sum is 46.

The square root of 849937042 is about 29153.6797334402. The cubic root of 849937042 is about 947.2448491129.

The spelling of 849937042 in words is "eight hundred forty-nine million, nine hundred thirty-seven thousand, forty-two".