424421765 has 8 divisors (see below), whose sum is σ = 512251128. Its totient is φ = 337574080.

The previous prime is 424421761. The next prime is 424421801. The reversal of 424421765 is 567124424.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 226231681 + 198190084 = 15041^2 + 14078^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 424421765 - 2² = 424421761 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (424421761) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 244466 + ... + 246195.

It is an arithmetic number, because the mean of its divisors is an integer number (64031391).

Almost surely, 2^424421765 is an apocalyptic number.

It is an amenable number.

424421765 is a deficient number, since it is larger than the sum of its proper divisors (87829363).

424421765 is a wasteful number, since it uses less digits than its factorization.

424421765 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 490839.

The product of its digits is 53760, while the sum is 35.

The square root of 424421765 is about 20601.4990959396. The cubic root of 424421765 is about 751.5061673293.

The spelling of 424421765 in words is "four hundred twenty-four million, four hundred twenty-one thousand, seven hundred sixty-five".