421839004240 has 40 divisors (see below), whose sum is σ = 1014595541640. Its totient is φ = 162917131776.

The previous prime is 421839004151. The next prime is 421839004267. The reversal of 421839004240 is 42400938124.

It can be written as a sum of positive squares in 4 ways, for example, as 5483698704 + 416355305536 = 74052^2 + 645256^2 .

It is a tau number, because it is divible by the number of its divisors (40).

It is a self number, because there is not a number n which added to its sum of digits gives 421839004240.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 90911259 + ... + 90915898.

It is an arithmetic number, because the mean of its divisors is an integer number (25364888541).

Almost surely, 2^421839004240 is an apocalyptic number.

421839004240 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

421839004240 is an abundant number, since it is smaller than the sum of its proper divisors (592756537400).

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

421839004240 is a wasteful number, since it uses less digits than its factorization.

421839004240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 181827199 (or 181827193 counting only the distinct ones).

The product of its (nonzero) digits is 55296, while the sum is 37.

The spelling of 421839004240 in words is "four hundred twenty-one billion, eight hundred thirty-nine million, four thousand, two hundred forty".