142180729 has 2 divisors, whose sum is σ = 142180730. Its totient is φ = 142180728.

The previous prime is 142180723. The next prime is 142180763. The reversal of 142180729 is 927081241.

It is an a-pointer prime, because the next prime (142180763) can be obtained adding 142180729 to its sum of digits (34).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 133448704 + 8732025 = 11552^2 + 2955^2 .

It is a cyclic number.

It is not a de Polignac number, because 142180729 - 2³ = 142180721 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 142180694 and 142180703.

It is not a weakly prime, because it can be changed into another prime (142180721) 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, 71090364 + 71090365.

It is an arithmetic number, because the mean of its divisors is an integer number (71090365).

Almost surely, 2^142180729 is an apocalyptic number.

It is an amenable number.

142180729 is a deficient number, since it is larger than the sum of its proper divisors (1).

142180729 is an equidigital number, since it uses as much as digits as its factorization.

142180729 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 8064, while the sum is 34.

The square root of 142180729 is about 11923.9560968665. The cubic root of 142180729 is about 521.9315845706.

The spelling of 142180729 in words is "one hundred forty-two million, one hundred eighty thousand, seven hundred twenty-nine".