421276417 has 16 divisors (see below), whose sum is σ = 459792000. Its totient is φ = 384459264.

The previous prime is 421276411. The next prime is 421276421. The reversal of 421276417 is 714672124.

It is a happy number.

It is not a de Polignac number, because 421276417 - 2¹⁵ = 421243649 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (421276411) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 453009 + ... + 453937.

It is an arithmetic number, because the mean of its divisors is an integer number (28737000).

Almost surely, 2^421276417 is an apocalyptic number.

It is an amenable number.

421276417 is a deficient number, since it is larger than the sum of its proper divisors (38515583).

421276417 is a wasteful number, since it uses less digits than its factorization.

421276417 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1800.

The product of its digits is 18816, while the sum is 34.

The square root of 421276417 is about 20525.0192935354. The cubic root of 421276417 is about 749.6451162513.

The spelling of 421276417 in words is "four hundred twenty-one million, two hundred seventy-six thousand, four hundred seventeen".