2142001409 has 2 divisors, whose sum is σ = 2142001410. Its totient is φ = 2142001408.

The previous prime is 2142001391. The next prime is 2142001427. The reversal of 2142001409 is 9041002412.

It is a balanced prime because it is at equal distance from previous prime (2142001391) and next prime (2142001427).

It can be written as a sum of positive squares in only one way, i.e., 2104240384 + 37761025 = 45872^2 + 6145^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2142001409 is a prime.

It is not a weakly prime, because it can be changed into another prime (2142001469) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1071000704 + 1071000705.

It is an arithmetic number, because the mean of its divisors is an integer number (1071000705).

Almost surely, 2^2142001409 is an apocalyptic number.

It is an amenable number.

2142001409 is a deficient number, since it is larger than the sum of its proper divisors (1).

2142001409 is an equidigital number, since it uses as much as digits as its factorization.

2142001409 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 576, while the sum is 23.

The square root of 2142001409 is about 46281.7610836061. The cubic root of 2142001409 is about 1289.0603515123.

The spelling of 2142001409 in words is "two billion, one hundred forty-two million, one thousand, four hundred nine".