421907272 has 16 divisors (see below), whose sum is σ = 816595200. Its totient is φ = 204148560.

The previous prime is 421907257. The next prime is 421907273. The reversal of 421907272 is 272709124.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (421907273) 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 3 ways as a sum of consecutive naturals, for example, 850372 + ... + 850867.

It is an arithmetic number, because the mean of its divisors is an integer number (51037200).

Almost surely, 2^421907272 is an apocalyptic number.

It is an amenable number.

421907272 is a deficient number, since it is larger than the sum of its proper divisors (394687928).

421907272 is a wasteful number, since it uses less digits than its factorization.

421907272 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1701276 (or 1701272 counting only the distinct ones).

The product of its (nonzero) digits is 14112, while the sum is 34.

The square root of 421907272 is about 20540.3814959703. The cubic root of 421907272 is about 750.0191236605.

The spelling of 421907272 in words is "four hundred twenty-one million, nine hundred seven thousand, two hundred seventy-two".