421009854 has 8 divisors (see below), whose sum is σ = 842019720. Its totient is φ = 140336616.

The previous prime is 421009829. The next prime is 421009867. The reversal of 421009854 is 458900124.

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

421009854 is an admirable number.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 35084149 + ... + 35084160.

It is an arithmetic number, because the mean of its divisors is an integer number (105252465).

Almost surely, 2^421009854 is an apocalyptic number.

421009854 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

421009854 is a wasteful number, since it uses less digits than its factorization.

421009854 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70168314.

The product of its (nonzero) digits is 11520, while the sum is 33.

The square root of 421009854 is about 20518.5246545652. The cubic root of 421009854 is about 749.4869700359.

Adding to 421009854 its reverse (458900124), we get a palindrome (879909978).

The spelling of 421009854 in words is "four hundred twenty-one million, nine thousand, eight hundred fifty-four".