142409207 has 2 divisors, whose sum is σ = 142409208. Its totient is φ = 142409206.

The previous prime is 142409191. The next prime is 142409209. The reversal of 142409207 is 702904241.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 142409207 - 2⁴ = 142409191 is a prime.

Together with 142409209, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 142409207.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (142409209) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 71204603 + 71204604.

It is an arithmetic number, because the mean of its divisors is an integer number (71204604).

Almost surely, 2^142409207 is an apocalyptic number.

142409207 is a deficient number, since it is larger than the sum of its proper divisors (1).

142409207 is an equidigital number, since it uses as much as digits as its factorization.

142409207 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 142409207 is about 11933.5328800821. The cubic root of 142409207 is about 522.2110084325.

The spelling of 142409207 in words is "one hundred forty-two million, four hundred nine thousand, two hundred seven".