2140423429 has 2 divisors, whose sum is σ = 2140423430. Its totient is φ = 2140423428.

The previous prime is 2140423421. The next prime is 2140423451. The reversal of 2140423429 is 9243240412.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1713794404 + 426629025 = 41398^2 + 20655^2 .

It is a cyclic number.

It is not a de Polignac number, because 2140423429 - 2³ = 2140423421 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2140423429.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2140423421) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1070211714 + 1070211715.

It is an arithmetic number, because the mean of its divisors is an integer number (1070211715).

Almost surely, 2^2140423429 is an apocalyptic number.

It is an amenable number.

2140423429 is a deficient number, since it is larger than the sum of its proper divisors (1).

2140423429 is an equidigital number, since it uses as much as digits as its factorization.

2140423429 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 13824, while the sum is 31.

The square root of 2140423429 is about 46264.7104065291. The cubic root of 2140423429 is about 1288.7437300029.

The spelling of 2140423429 in words is "two billion, one hundred forty million, four hundred twenty-three thousand, four hundred twenty-nine".