492240249421 has 2 divisors, whose sum is σ = 492240249422. Its totient is φ = 492240249420.

The previous prime is 492240249373. The next prime is 492240249439. The reversal of 492240249421 is 124942042294.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 362488284900 + 129751964521 = 602070^2 + 360211^2 .

It is a cyclic number.

It is not a de Polignac number, because 492240249421 - 2⁹ = 492240248909 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (492240249451) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 246120124710 + 246120124711.

It is an arithmetic number, because the mean of its divisors is an integer number (246120124711).

Almost surely, 2^492240249421 is an apocalyptic number.

It is an amenable number.

492240249421 is a deficient number, since it is larger than the sum of its proper divisors (1).

492240249421 is an equidigital number, since it uses as much as digits as its factorization.

492240249421 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 331776, while the sum is 43.

The spelling of 492240249421 in words is "four hundred ninety-two billion, two hundred forty million, two hundred forty-nine thousand, four hundred twenty-one".