421355033 has 6 divisors (see below), whose sum is σ = 463142442. Its totient is φ = 383049920.

The previous prime is 421355023. The next prime is 421355041. The reversal of 421355033 is 330553124.

It can be written as a sum of positive squares in only one way, i.e., 213072409 + 208282624 = 14597^2 + 14432^2 .

It is not a de Polignac number, because 421355033 - 2⁸ = 421354777 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 421354993 and 421355011.

It is not an unprimeable number, because it can be changed into a prime (421355003) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1741016 + ... + 1741257.

It is an arithmetic number, because the mean of its divisors is an integer number (77190407).

Almost surely, 2^421355033 is an apocalyptic number.

It is an amenable number.

421355033 is a deficient number, since it is larger than the sum of its proper divisors (41787409).

421355033 is a wasteful number, since it uses less digits than its factorization.

421355033 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3482295 (or 3482284 counting only the distinct ones).

The product of its (nonzero) digits is 5400, while the sum is 26.

The square root of 421355033 is about 20526.9343302891. The cubic root of 421355033 is about 749.6917447297.

The spelling of 421355033 in words is "four hundred twenty-one million, three hundred fifty-five thousand, thirty-three".