422372129 has 2 divisors, whose sum is σ = 422372130. Its totient is φ = 422372128.

The previous prime is 422372107. The next prime is 422372149. The reversal of 422372129 is 921273224.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 366645904 + 55726225 = 19148^2 + 7465^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-422372129 is a prime.

It is a super-3 number, since 3×422372129³ (a number of 27 digits) contains 333 as substring.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 422372095 and 422372104.

It is not a weakly prime, because it can be changed into another prime (422372149) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 211186064 + 211186065.

It is an arithmetic number, because the mean of its divisors is an integer number (211186065).

Almost surely, 2^422372129 is an apocalyptic number.

It is an amenable number.

422372129 is a deficient number, since it is larger than the sum of its proper divisors (1).

422372129 is an equidigital number, since it uses as much as digits as its factorization.

422372129 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 12096, while the sum is 32.

The square root of 422372129 is about 20551.6940664267. The cubic root of 422372129 is about 750.2944793237.

The spelling of 422372129 in words is "four hundred twenty-two million, three hundred seventy-two thousand, one hundred twenty-nine".