142143431 has 2 divisors, whose sum is σ = 142143432. Its totient is φ = 142143430.

The previous prime is 142143377. The next prime is 142143457. The reversal of 142143431 is 134341241.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 142143431 - 2¹⁸ = 141881287 is a prime.

It is a super-2 number, since 2×142143431² = 40409509952903522, which contains 22 as substring.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 142143397 and 142143406.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (142148431) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a good prime.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 71071715 + 71071716.

It is an arithmetic number, because the mean of its divisors is an integer number (71071716).

Almost surely, 2^142143431 is an apocalyptic number.

142143431 is a deficient number, since it is larger than the sum of its proper divisors (1).

142143431 is an equidigital number, since it uses as much as digits as its factorization.

142143431 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1152, while the sum is 23.

The square root of 142143431 is about 11922.3919999302. The cubic root of 142143431 is about 521.8859414728.

Adding to 142143431 its reverse (134341241), we get a palindrome (276484672).

The spelling of 142143431 in words is "one hundred forty-two million, one hundred forty-three thousand, four hundred thirty-one".