2141720069 has 2 divisors, whose sum is σ = 2141720070. Its totient is φ = 2141720068.

The previous prime is 2141720051. The next prime is 2141720101. The reversal of 2141720069 is 9600271412.

It is a happy number.

It is an a-pointer prime, because the next prime (2141720101) can be obtained adding 2141720069 to its sum of digits (32).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1641303169 + 500416900 = 40513^2 + 22370^2 .

It is a cyclic number.

It is not a de Polignac number, because 2141720069 - 2⁸ = 2141719813 is a prime.

It is a super-2 number, since 2×2141720069² = 9173929707914729522, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2141770069) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1070860034 + 1070860035.

It is an arithmetic number, because the mean of its divisors is an integer number (1070860035).

Almost surely, 2^2141720069 is an apocalyptic number.

It is an amenable number.

2141720069 is a deficient number, since it is larger than the sum of its proper divisors (1).

2141720069 is an equidigital number, since it uses as much as digits as its factorization.

2141720069 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6048, while the sum is 32.

The square root of 2141720069 is about 46278.7215575366. The cubic root of 2141720069 is about 1289.0039120663.

The spelling of 2141720069 in words is "two billion, one hundred forty-one million, seven hundred twenty thousand, sixty-nine".