421450346 has 4 divisors (see below), whose sum is σ = 632175522. Its totient is φ = 210725172.

The previous prime is 421450327. The next prime is 421450409. The reversal of 421450346 is 643054124.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 419799121 + 1651225 = 20489^2 + 1285^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105362585 + ... + 105362588.

Almost surely, 2^421450346 is an apocalyptic number.

421450346 is a deficient number, since it is larger than the sum of its proper divisors (210725176).

421450346 is a wasteful number, since it uses less digits than its factorization.

421450346 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 210725175.

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

The square root of 421450346 is about 20529.2558559730. The cubic root of 421450346 is about 749.7482687031.

The spelling of 421450346 in words is "four hundred twenty-one million, four hundred fifty thousand, three hundred forty-six".