2142431 has 2 divisors, whose sum is σ = 2142432. Its totient is φ = 2142430.

The previous prime is 2142403. The next prime is 2142449. The reversal of 2142431 is 1342412.

2142431 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2142431 - 2¹⁰ = 2141407 is a prime.

It is a super-2 number, since 2×2142431² = 9180021179522, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2102431) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1071215 + 1071216.

It is an arithmetic number, because the mean of its divisors is an integer number (1071216).

2^2142431 is an apocalyptic number.

2142431 is a deficient number, since it is larger than the sum of its proper divisors (1).

2142431 is an equidigital number, since it uses as much as digits as its factorization.

2142431 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 192, while the sum is 17.

The square root of 2142431 is about 1463.7045466897. The cubic root of 2142431 is about 128.9146521967.

Adding to 2142431 its reverse (1342412), we get a palindrome (3484843).

The spelling of 2142431 in words is "two million, one hundred forty-two thousand, four hundred thirty-one".