421540346 has 32 divisors (see below), whose sum is σ = 692712000. Its totient is φ = 191624832.

The previous prime is 421540337. The next prime is 421540351. The reversal of 421540346 is 643045124.

It is a Harshad number since it is a multiple of its sum of digits (29).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 196190 + ... + 198326.

It is an arithmetic number, because the mean of its divisors is an integer number (21647250).

Almost surely, 2^421540346 is an apocalyptic number.

421540346 is a deficient number, since it is larger than the sum of its proper divisors (271171654).

421540346 is a wasteful number, since it uses less digits than its factorization.

421540346 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2366.

The product of its (nonzero) digits is 11520, while the sum is 29.

The square root of 421540346 is about 20531.4477326856. The cubic root of 421540346 is about 749.8016340577.

The spelling of 421540346 in words is "four hundred twenty-one million, five hundred forty thousand, three hundred forty-six".