492972121 has 2 divisors, whose sum is σ = 492972122. Its totient is φ = 492972120.

The previous prime is 492972107. The next prime is 492972187. The reversal of 492972121 is 121279294.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 491242896 + 1729225 = 22164^2 + 1315^2 .

It is a cyclic number.

It is not a de Polignac number, because 492972121 - 2¹³ = 492963929 is a prime.

It is not a weakly prime, because it can be changed into another prime (492982121) 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, 246486060 + 246486061.

It is an arithmetic number, because the mean of its divisors is an integer number (246486061).

Almost surely, 2^492972121 is an apocalyptic number.

It is an amenable number.

492972121 is a deficient number, since it is larger than the sum of its proper divisors (1).

492972121 is an equidigital number, since it uses as much as digits as its factorization.

492972121 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 18144, while the sum is 37.

The square root of 492972121 is about 22202.9754987929. The cubic root of 492972121 is about 789.9642781476.

The spelling of 492972121 in words is "four hundred ninety-two million, nine hundred seventy-two thousand, one hundred twenty-one".