423421049 has 2 divisors, whose sum is σ = 423421050. Its totient is φ = 423421048.

The previous prime is 423421013. The next prime is 423421051. The reversal of 423421049 is 940124324.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 232013824 + 191407225 = 15232^2 + 13835^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-423421049 is a prime.

Together with 423421051, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (423421249) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 211710524 + 211710525.

It is an arithmetic number, because the mean of its divisors is an integer number (211710525).

Almost surely, 2^423421049 is an apocalyptic number.

It is an amenable number.

423421049 is a deficient number, since it is larger than the sum of its proper divisors (1).

423421049 is an equidigital number, since it uses as much as digits as its factorization.

423421049 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6912, while the sum is 29.

The square root of 423421049 is about 20577.1973067277. The cubic root of 423421049 is about 750.9150602840.

The spelling of 423421049 in words is "four hundred twenty-three million, four hundred twenty-one thousand, forty-nine".