2145833842 has 4 divisors (see below), whose sum is σ = 3218750766. Its totient is φ = 1072916920.

The previous prime is 2145833803. The next prime is 2145833861. The reversal of 2145833842 is 2483385412.

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., 1083660561 + 1062173281 = 32919^2 + 32591^2 .

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a junction number, because it is equal to n+sod(n) for n = 2145833795 and 2145833804.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 536458459 + ... + 536458462.

Almost surely, 2^2145833842 is an apocalyptic number.

2145833842 is a deficient number, since it is larger than the sum of its proper divisors (1072916924).

2145833842 is a wasteful number, since it uses less digits than its factorization.

2145833842 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1072916923.

The product of its digits is 184320, while the sum is 40.

The square root of 2145833842 is about 46323.1458560405. The cubic root of 2145833842 is about 1289.8286818542.

The spelling of 2145833842 in words is "two billion, one hundred forty-five million, eight hundred thirty-three thousand, eight hundred forty-two".