142666613 has 2 divisors, whose sum is σ = 142666614. Its totient is φ = 142666612.

The previous prime is 142666583. The next prime is 142666637. The reversal of 142666613 is 316666241.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 128097124 + 14569489 = 11318^2 + 3817^2 .

It is an emirp because it is prime and its reverse (316666241) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 142666613 - 2¹⁴ = 142650229 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (142666213) 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, 71333306 + 71333307.

It is an arithmetic number, because the mean of its divisors is an integer number (71333307).

Almost surely, 2^142666613 is an apocalyptic number.

It is an amenable number.

142666613 is a deficient number, since it is larger than the sum of its proper divisors (1).

142666613 is an equidigital number, since it uses as much as digits as its factorization.

142666613 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 31104, while the sum is 35.

The square root of 142666613 is about 11944.3129982431. The cubic root of 142666613 is about 522.5254528477.

The spelling of 142666613 in words is "one hundred forty-two million, six hundred sixty-six thousand, six hundred thirteen".