142656641 has 2 divisors, whose sum is σ = 142656642. Its totient is φ = 142656640.

The previous prime is 142656629. The next prime is 142656653. The reversal of 142656641 is 146656241.

It is a balanced prime because it is at equal distance from previous prime (142656629) and next prime (142656653).

It can be written as a sum of positive squares in only one way, i.e., 92544400 + 50112241 = 9620^2 + 7079^2 .

It is a cyclic number.

It is not a de Polignac number, because 142656641 - 2¹⁴ = 142640257 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (142656611) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 71328320 + 71328321.

It is an arithmetic number, because the mean of its divisors is an integer number (71328321).

Almost surely, 2^142656641 is an apocalyptic number.

It is an amenable number.

142656641 is a deficient number, since it is larger than the sum of its proper divisors (1).

142656641 is an equidigital number, since it uses as much as digits as its factorization.

142656641 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 34560, while the sum is 35.

The square root of 142656641 is about 11943.8955537965. The cubic root of 142656641 is about 522.5132782047.

The spelling of 142656641 in words is "one hundred forty-two million, six hundred fifty-six thousand, six hundred forty-one".