2129207 has 2 divisors, whose sum is σ = 2129208. Its totient is φ = 2129206.

The previous prime is 2129203. The next prime is 2129213. The reversal of 2129207 is 7029212.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2129207 - 2² = 2129203 is a prime.

It is a Chen prime.

It is equal to p₁₅₇₈₂₀ and since 2129207 and 157820 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2129203) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1064603 + 1064604.

It is an arithmetic number, because the mean of its divisors is an integer number (1064604).

2^2129207 is an apocalyptic number.

2129207 is a deficient number, since it is larger than the sum of its proper divisors (1).

2129207 is an equidigital number, since it uses as much as digits as its factorization.

2129207 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 504, while the sum is 23.

The square root of 2129207 is about 1459.1802493181. The cubic root of 2129207 is about 128.6488658142.

The spelling of 2129207 in words is "two million, one hundred twenty-nine thousand, two hundred seven".