421283870 has 96 divisors (see below), whose sum is σ = 952948800. Its totient is φ = 133292544.

The previous prime is 421283869. The next prime is 421283923. The reversal of 421283870 is 78382124.

It is a Harshad number since it is a multiple of its sum of digits (35).

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 421283870.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 326186 + ... + 327474.

It is an arithmetic number, because the mean of its divisors is an integer number (9926550).

Almost surely, 2^421283870 is an apocalyptic number.

421283870 is an abundant number, since it is smaller than the sum of its proper divisors (531664930).

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

421283870 is a wasteful number, since it uses less digits than its factorization.

421283870 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1362 (or 1355 counting only the distinct ones).

The product of its (nonzero) digits is 21504, while the sum is 35.

The square root of 421283870 is about 20525.2008516360. The cubic root of 421283870 is about 749.6495370005.

The spelling of 421283870 in words is "four hundred twenty-one million, two hundred eighty-three thousand, eight hundred seventy".