421226761 has 12 divisors (see below), whose sum is σ = 442953792. Its totient is φ = 399807408.

The previous prime is 421226749. The next prime is 421226809. The reversal of 421226761 is 167622124.

It is not a de Polignac number, because 421226761 - 2²¹ = 419129609 is a prime.

It is a super-2 number, since 2×421226761² = 354863968365102242, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (421226161) 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 in 11 ways as a sum of consecutive naturals, for example, 566556 + ... + 567298.

It is an arithmetic number, because the mean of its divisors is an integer number (36912816).

Almost surely, 2^421226761 is an apocalyptic number.

It is an amenable number.

421226761 is a deficient number, since it is larger than the sum of its proper divisors (21727031).

421226761 is an equidigital number, since it uses as much as digits as its factorization.

421226761 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1080 (or 923 counting only the distinct ones).

The product of its digits is 8064, while the sum is 31.

The square root of 421226761 is about 20523.8096122528. The cubic root of 421226761 is about 749.6156614492.

Adding to 421226761 its reverse (167622124), we get a palindrome (588848885).

The spelling of 421226761 in words is "four hundred twenty-one million, two hundred twenty-six thousand, seven hundred sixty-one".