142312213 has 2 divisors, whose sum is σ = 142312214. Its totient is φ = 142312212.

The previous prime is 142312199. The next prime is 142312229. The reversal of 142312213 is 312213241.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 84217329 + 58094884 = 9177^2 + 7622^2 .

It is a cyclic number.

It is not a de Polignac number, because 142312213 - 2¹³ = 142304021 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (142312273) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 71156106 + 71156107.

It is an arithmetic number, because the mean of its divisors is an integer number (71156107).

Almost surely, 2^142312213 is an apocalyptic number.

It is an amenable number.

142312213 is a deficient number, since it is larger than the sum of its proper divisors (1).

142312213 is an equidigital number, since it uses as much as digits as its factorization.

142312213 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 288, while the sum is 19.

The square root of 142312213 is about 11929.4682614105. The cubic root of 142312213 is about 522.0924233133.

Adding to 142312213 its reverse (312213241), we get a palindrome (454525454).

The spelling of 142312213 in words is "one hundred forty-two million, three hundred twelve thousand, two hundred thirteen".