142204709 has 2 divisors, whose sum is σ = 142204710. Its totient is φ = 142204708.

The previous prime is 142204697. The next prime is 142204723. The reversal of 142204709 is 907402241.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 93064609 + 49140100 = 9647^2 + 7010^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-142204709 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (142204729) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 71102354 + 71102355.

It is an arithmetic number, because the mean of its divisors is an integer number (71102355).

Almost surely, 2^142204709 is an apocalyptic number.

It is an amenable number.

142204709 is a deficient number, since it is larger than the sum of its proper divisors (1).

142204709 is an equidigital number, since it uses as much as digits as its factorization.

142204709 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4032, while the sum is 29.

The square root of 142204709 is about 11924.9615932296. The cubic root of 142204709 is about 521.9609256679.

The spelling of 142204709 in words is "one hundred forty-two million, two hundred four thousand, seven hundred nine".