142543229 has 2 divisors, whose sum is σ = 142543230. Its totient is φ = 142543228.

The previous prime is 142543223. The next prime is 142543253. The reversal of 142543229 is 922345241.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 85192900 + 57350329 = 9230^2 + 7573^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-142543229 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 142543195 and 142543204.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (142543223) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 71271614 + 71271615.

It is an arithmetic number, because the mean of its divisors is an integer number (71271615).

Almost surely, 2^142543229 is an apocalyptic number.

It is an amenable number.

142543229 is a deficient number, since it is larger than the sum of its proper divisors (1).

142543229 is an equidigital number, since it uses as much as digits as its factorization.

142543229 is an evil number, because the sum of its binary digits is even.

The product of its digits is 17280, while the sum is 32.

The square root of 142543229 is about 11939.1469125729. The cubic root of 142543229 is about 522.3747755124.

The spelling of 142543229 in words is "one hundred forty-two million, five hundred forty-three thousand, two hundred twenty-nine".