142222807 has 2 divisors, whose sum is σ = 142222808. Its totient is φ = 142222806.

The previous prime is 142222793. The next prime is 142222813. The reversal of 142222807 is 708222241.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-142222807 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (142222877) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 71111403 + 71111404.

It is an arithmetic number, because the mean of its divisors is an integer number (71111404).

Almost surely, 2^142222807 is an apocalyptic number.

142222807 is a deficient number, since it is larger than the sum of its proper divisors (1).

142222807 is an equidigital number, since it uses as much as digits as its factorization.

142222807 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3584, while the sum is 28.

The square root of 142222807 is about 11925.7203975274. The cubic root of 142222807 is about 521.9830675697.

The spelling of 142222807 in words is "one hundred forty-two million, two hundred twenty-two thousand, eight hundred seven".