421240327 has 2 divisors, whose sum is σ = 421240328. Its totient is φ = 421240326.

The previous prime is 421240289. The next prime is 421240333. The reversal of 421240327 is 723042124.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 421240327 - 2¹⁵ = 421207559 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (421240357) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 210620163 + 210620164.

It is an arithmetic number, because the mean of its divisors is an integer number (210620164).

Almost surely, 2^421240327 is an apocalyptic number.

421240327 is a deficient number, since it is larger than the sum of its proper divisors (1).

421240327 is an equidigital number, since it uses as much as digits as its factorization.

421240327 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2688, while the sum is 25.

The square root of 421240327 is about 20524.1401037900. The cubic root of 421240327 is about 749.6237087196.

The spelling of 421240327 in words is "four hundred twenty-one million, two hundred forty thousand, three hundred twenty-seven".