712142209 has 2 divisors, whose sum is σ = 712142210. Its totient is φ = 712142208.

The previous prime is 712142203. The next prime is 712142267. The reversal of 712142209 is 902241217.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 516561984 + 195580225 = 22728^2 + 13985^2 .

It is a cyclic number.

It is not a de Polignac number, because 712142209 - 2⁵ = 712142177 is a prime.

It is not a weakly prime, because it can be changed into another prime (712142203) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 356071104 + 356071105.

It is an arithmetic number, because the mean of its divisors is an integer number (356071105).

Almost surely, 2^712142209 is an apocalyptic number.

It is an amenable number.

712142209 is a deficient number, since it is larger than the sum of its proper divisors (1).

712142209 is an equidigital number, since it uses as much as digits as its factorization.

712142209 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2016, while the sum is 28.

The square root of 712142209 is about 26685.9927490060. The cubic root of 712142209 is about 893.0084652469.

The spelling of 712142209 in words is "seven hundred twelve million, one hundred forty-two thousand, two hundred nine".