142443131 has 2 divisors, whose sum is σ = 142443132. Its totient is φ = 142443130.

The previous prime is 142443127. The next prime is 142443137. The reversal of 142443131 is 131344241.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 142443131 - 2² = 142443127 is a prime.

It is a super-2 number, since 2×142443131² = 40580091138166322, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 142443097 and 142443106.

It is not a weakly prime, because it can be changed into another prime (142443137) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 71221565 + 71221566.

It is an arithmetic number, because the mean of its divisors is an integer number (71221566).

Almost surely, 2^142443131 is an apocalyptic number.

142443131 is a deficient number, since it is larger than the sum of its proper divisors (1).

142443131 is an equidigital number, since it uses as much as digits as its factorization.

142443131 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 142443131 is about 11934.9541683242. The cubic root of 142443131 is about 522.2524712941.

Adding to 142443131 its reverse (131344241), we get a palindrome (273787372).

The spelling of 142443131 in words is "one hundred forty-two million, four hundred forty-three thousand, one hundred thirty-one".