421382940 has 48 divisors (see below), whose sum is σ = 1287135360. Its totient is φ = 102153280.

The previous prime is 421382933. The next prime is 421382947. The reversal of 421382940 is 49283124.

It is an interprime number because it is at equal distance from previous prime (421382933) and next prime (421382947).

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (421382947) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 318570 + ... + 319889.

It is an arithmetic number, because the mean of its divisors is an integer number (26815320).

Almost surely, 2^421382940 is an apocalyptic number.

It is an amenable number.

421382940 is an abundant number, since it is smaller than the sum of its proper divisors (865752420).

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

421382940 is a wasteful number, since it uses less digits than its factorization.

421382940 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 638482 (or 638480 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 33.

The square root of 421382940 is about 20527.6140844473. The cubic root of 421382940 is about 749.7082954482.

It can be divided in two parts, 4213 and 82940, that added together give a triangular number (87153 = T₄₁₇).

The spelling of 421382940 in words is "four hundred twenty-one million, three hundred eighty-two thousand, nine hundred forty".