421259061 has 4 divisors (see below), whose sum is σ = 561678752. Its totient is φ = 280839372.

The previous prime is 421259039. The next prime is 421259063. The reversal of 421259061 is 160952124.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 421259061 - 2⁷ = 421258933 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (421259063) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 70209841 + ... + 70209846.

It is an arithmetic number, because the mean of its divisors is an integer number (140419688).

Almost surely, 2^421259061 is an apocalyptic number.

It is an amenable number.

421259061 is a deficient number, since it is larger than the sum of its proper divisors (140419691).

421259061 is a wasteful number, since it uses less digits than its factorization.

421259061 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 140419690.

The product of its (nonzero) digits is 4320, while the sum is 30.

The square root of 421259061 is about 20524.5964881164. The cubic root of 421259061 is about 749.6348213327.

The spelling of 421259061 in words is "four hundred twenty-one million, two hundred fifty-nine thousand, sixty-one".