421356017 has 2 divisors, whose sum is σ = 421356018. Its totient is φ = 421356016.

The previous prime is 421355947. The next prime is 421356029. The reversal of 421356017 is 710653124.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 291760561 + 129595456 = 17081^2 + 11384^2 .

It is a cyclic number.

It is not a de Polignac number, because 421356017 - 2¹⁰ = 421354993 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (421356077) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 210678008 + 210678009.

It is an arithmetic number, because the mean of its divisors is an integer number (210678009).

Almost surely, 2^421356017 is an apocalyptic number.

It is an amenable number.

421356017 is a deficient number, since it is larger than the sum of its proper divisors (1).

421356017 is an equidigital number, since it uses as much as digits as its factorization.

421356017 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5040, while the sum is 29.

The square root of 421356017 is about 20526.9582987836. The cubic root of 421356017 is about 749.6923283200.

The spelling of 421356017 in words is "four hundred twenty-one million, three hundred fifty-six thousand, seventeen".