421121436 has 12 divisors (see below), whose sum is σ = 982616712. Its totient is φ = 140373808.

The previous prime is 421121413. The next prime is 421121461. The reversal of 421121436 is 634121124.

It is a tau number, because it is divible by the number of its divisors (12).

It is a nude number because it is divisible by every one of its digits.

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, 17546715 + ... + 17546738.

It is an arithmetic number, because the mean of its divisors is an integer number (81884726).

Almost surely, 2^421121436 is an apocalyptic number.

It is an amenable number.

421121436 is an abundant number, since it is smaller than the sum of its proper divisors (561495276).

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

421121436 is a wasteful number, since it uses less digits than its factorization.

421121436 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35093460 (or 35093458 counting only the distinct ones).

The product of its digits is 1152, while the sum is 24.

The square root of 421121436 is about 20521.2435295720. The cubic root of 421121436 is about 749.5531774078.

The spelling of 421121436 in words is "four hundred twenty-one million, one hundred twenty-one thousand, four hundred thirty-six".