1942872705 has 12 divisors (see below), whose sum is σ = 3367646100. Its totient is φ = 1036198752.

The previous prime is 1942872667. The next prime is 1942872707. The reversal of 1942872705 is 5072782491.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 717382656 + 1225490049 = 26784^2 + 35007^2 .

It is not a de Polignac number, because 1942872705 - 2⁹ = 1942872193 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45), and also a Moran number because the ratio is a prime number: 43174949 = 1942872705 / (1 + 9 + 4 + 2 + 8 + 7 + 2 + 7 + 0 + 5).

It is not an unprimeable number, because it can be changed into a prime (1942872707) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 21587430 + ... + 21587519.

It is an arithmetic number, because the mean of its divisors is an integer number (280637175).

Almost surely, 2^1942872705 is an apocalyptic number.

1942872705 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1942872705 is a deficient number, since it is larger than the sum of its proper divisors (1424773395).

1942872705 is a wasteful number, since it uses less digits than its factorization.

1942872705 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43174960 (or 43174957 counting only the distinct ones).

The product of its (nonzero) digits is 282240, while the sum is 45.

The square root of 1942872705 is about 44078.0297313752. The cubic root of 1942872705 is about 1247.8090056120.

The spelling of 1942872705 in words is "one billion, nine hundred forty-two million, eight hundred seventy-two thousand, seven hundred five".