421263229 has 2 divisors, whose sum is σ = 421263230. Its totient is φ = 421263228.

The previous prime is 421263221. The next prime is 421263287. The reversal of 421263229 is 922362124.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 420332004 + 931225 = 20502^2 + 965^2 .

It is a cyclic number.

It is not a de Polignac number, because 421263229 - 2³ = 421263221 is a prime.

It is a super-3 number, since 3×421263229³ (a number of 27 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 421263229.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (421263221) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 210631614 + 210631615.

It is an arithmetic number, because the mean of its divisors is an integer number (210631615).

Almost surely, 2^421263229 is an apocalyptic number.

It is an amenable number.

421263229 is a deficient number, since it is larger than the sum of its proper divisors (1).

421263229 is an equidigital number, since it uses as much as digits as its factorization.

421263229 is an evil number, because the sum of its binary digits is even.

The product of its digits is 10368, while the sum is 31.

The square root of 421263229 is about 20524.6980245752. The cubic root of 421263229 is about 749.6372936575.

The spelling of 421263229 in words is "four hundred twenty-one million, two hundred sixty-three thousand, two hundred twenty-nine".