421506674 has 4 divisors (see below), whose sum is σ = 632260014. Its totient is φ = 210753336.

The previous prime is 421506661. The next prime is 421506689. The reversal of 421506674 is 476605124.

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., 356945449 + 64561225 = 18893^2 + 8035^2 .

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 105376667 + ... + 105376670.

Almost surely, 2^421506674 is an apocalyptic number.

421506674 is a deficient number, since it is larger than the sum of its proper divisors (210753340).

421506674 is a wasteful number, since it uses less digits than its factorization.

421506674 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 210753339.

The product of its (nonzero) digits is 40320, while the sum is 35.

The square root of 421506674 is about 20530.6277059422. The cubic root of 421506674 is about 749.7816691891.

The spelling of 421506674 in words is "four hundred twenty-one million, five hundred six thousand, six hundred seventy-four".