421403091 has 8 divisors (see below), whose sum is σ = 563378640. Its totient is φ = 280181472.

The previous prime is 421403077. The next prime is 421403093. The reversal of 421403091 is 190304124.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 421403091 - 2¹³ = 421394899 is a prime.

It is not an unprimeable number, because it can be changed into a prime (421403093) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 187176 + ... + 189413.

It is an arithmetic number, because the mean of its divisors is an integer number (70422330).

Almost surely, 2^421403091 is an apocalyptic number.

421403091 is a deficient number, since it is larger than the sum of its proper divisors (141975549).

421403091 is a wasteful number, since it uses less digits than its factorization.

421403091 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 376965.

The product of its (nonzero) digits is 864, while the sum is 24.

The square root of 421403091 is about 20528.1049052269. The cubic root of 421403091 is about 749.7202458854.

The spelling of 421403091 in words is "four hundred twenty-one million, four hundred three thousand, ninety-one".