2140303421 has 2 divisors, whose sum is σ = 2140303422. Its totient is φ = 2140303420.

The previous prime is 2140303397. The next prime is 2140303427. The reversal of 2140303421 is 1243030412.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1129699321 + 1010604100 = 33611^2 + 31790^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2140303421 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2140303393 and 2140303402.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2140303427) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1070151710 + 1070151711.

It is an arithmetic number, because the mean of its divisors is an integer number (1070151711).

Almost surely, 2^2140303421 is an apocalyptic number.

It is an amenable number.

2140303421 is a deficient number, since it is larger than the sum of its proper divisors (1).

2140303421 is an equidigital number, since it uses as much as digits as its factorization.

2140303421 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 20.

The square root of 2140303421 is about 46263.4134170837. The cubic root of 2140303421 is about 1288.7196440446.

Adding to 2140303421 its reverse (1243030412), we get a palindrome (3383333833).

The spelling of 2140303421 in words is "two billion, one hundred forty million, three hundred three thousand, four hundred twenty-one".