421250471 has 2 divisors, whose sum is σ = 421250472. Its totient is φ = 421250470.

The previous prime is 421250461. The next prime is 421250521. The reversal of 421250471 is 174052124.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-421250471 is a prime.

It is a super-3 number, since 3×421250471³ (a number of 27 digits) contains 333 as substring.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 421250471.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (421250411) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 210625235 + 210625236.

It is an arithmetic number, because the mean of its divisors is an integer number (210625236).

Almost surely, 2^421250471 is an apocalyptic number.

421250471 is a deficient number, since it is larger than the sum of its proper divisors (1).

421250471 is an equidigital number, since it uses as much as digits as its factorization.

421250471 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2240, while the sum is 26.

The square root of 421250471 is about 20524.3872259320. The cubic root of 421250471 is about 749.6297259670.

The spelling of 421250471 in words is "four hundred twenty-one million, two hundred fifty thousand, four hundred seventy-one".