142140029 has 2 divisors, whose sum is σ = 142140030. Its totient is φ = 142140028.

The previous prime is 142139981. The next prime is 142140041. The reversal of 142140029 is 920041241.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 85137529 + 57002500 = 9227^2 + 7550^2 .

It is a cyclic number.

It is not a de Polignac number, because 142140029 - 2¹² = 142135933 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 142139986 and 142140013.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (142140059) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 71070014 + 71070015.

It is an arithmetic number, because the mean of its divisors is an integer number (71070015).

Almost surely, 2^142140029 is an apocalyptic number.

It is an amenable number.

142140029 is a deficient number, since it is larger than the sum of its proper divisors (1).

142140029 is an equidigital number, since it uses as much as digits as its factorization.

142140029 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 576, while the sum is 23.

The square root of 142140029 is about 11922.2493263646. The cubic root of 142140029 is about 521.8817779081.

The spelling of 142140029 in words is "one hundred forty-two million, one hundred forty thousand, twenty-nine".