421336772 has 24 divisors (see below), whose sum is σ = 787635576. Its totient is φ = 196517888.

The previous prime is 421336757. The next prime is 421336781. The reversal of 421336772 is 277633124.

It can be written as a sum of positive squares in 4 ways, for example, as 20376196 + 400960576 = 4514^2 + 20024^2 .

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 19733 + ... + 35100.

It is an arithmetic number, because the mean of its divisors is an integer number (32818149).

Almost surely, 2^421336772 is an apocalyptic number.

It is an amenable number.

421336772 is a deficient number, since it is larger than the sum of its proper divisors (366298804).

421336772 is a wasteful number, since it uses less digits than its factorization.

421336772 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54967 (or 54965 counting only the distinct ones).

The product of its digits is 42336, while the sum is 35.

The square root of 421336772 is about 20526.4895196427. The cubic root of 421336772 is about 749.6809143391.

Adding to 421336772 its reverse (277633124), we get a palindrome (698969896).

The spelling of 421336772 in words is "four hundred twenty-one million, three hundred thirty-six thousand, seven hundred seventy-two".