2142199747 has 2 divisors, whose sum is σ = 2142199748. Its totient is φ = 2142199746.

The previous prime is 2142199729. The next prime is 2142199817. The reversal of 2142199747 is 7479912412.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2142199747 - 2¹⁵ = 2142166979 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2142199697 and 2142199706.

It is not a weakly prime, because it can be changed into another prime (2142197747) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1071099873 + 1071099874.

It is an arithmetic number, because the mean of its divisors is an integer number (1071099874).

Almost surely, 2^2142199747 is an apocalyptic number.

2142199747 is a deficient number, since it is larger than the sum of its proper divisors (1).

2142199747 is an equidigital number, since it uses as much as digits as its factorization.

2142199747 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 254016, while the sum is 46.

The square root of 2142199747 is about 46283.9037571379. The cubic root of 2142199747 is about 1289.1001370076.

The spelling of 2142199747 in words is "two billion, one hundred forty-two million, one hundred ninety-nine thousand, seven hundred forty-seven".