421268940 has 36 divisors (see below), whose sum is σ = 1277849664. Its totient is φ = 112338336.

The previous prime is 421268933. The next prime is 421268941. The reversal of 421268940 is 49862124.

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 421268895 and 421268904.

It is not an unprimeable number, because it can be changed into a prime (421268941) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1170012 + ... + 1170371.

It is an arithmetic number, because the mean of its divisors is an integer number (35495824).

Almost surely, 2^421268940 is an apocalyptic number.

It is an amenable number.

421268940 is an abundant number, since it is smaller than the sum of its proper divisors (856580724).

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

421268940 is a wasteful number, since it uses less digits than its factorization.

421268940 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2340398 (or 2340393 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 36.

The square root of 421268940 is about 20524.8371491712. The cubic root of 421268940 is about 749.6406812142.

It can be divided in two parts, 421 and 268940, that added together give a square (269361 = 519²).

The spelling of 421268940 in words is "four hundred twenty-one million, two hundred sixty-eight thousand, nine hundred forty".