84142207 has 2 divisors, whose sum is σ = 84142208. Its totient is φ = 84142206.

The previous prime is 84142193. The next prime is 84142213. The reversal of 84142207 is 70224148.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-84142207 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (84142007) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42071103 + 42071104.

It is an arithmetic number, because the mean of its divisors is an integer number (42071104).

Almost surely, 2^84142207 is an apocalyptic number.

84142207 is a deficient number, since it is larger than the sum of its proper divisors (1).

84142207 is an equidigital number, since it uses as much as digits as its factorization.

84142207 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 84142207 is about 9172.9061370974. The cubic root of 84142207 is about 438.1989168281.

The spelling of 84142207 in words is "eighty-four million, one hundred forty-two thousand, two hundred seven".