421400523224240 has 80 divisors (see below), whose sum is σ = 1125028127043840. Its totient is φ = 143795439164160.

The previous prime is 421400523224209. The next prime is 421400523224251. The reversal of 421400523224240 is 42422325004124.

It is a tau number, because it is divible by the number of its divisors (80).

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

It is a self number, because there is not a number n which added to its sum of digits gives 421400523224240.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1783059410 + ... + 1783295729.

It is an arithmetic number, because the mean of its divisors is an integer number (14062851588048).

Almost surely, 2^{421400523224240} is an apocalyptic number.

421400523224240 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

421400523224240 is an abundant number, since it is smaller than the sum of its proper divisors (703627603819600).

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

421400523224240 is a wasteful number, since it uses less digits than its factorization.

421400523224240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3566355370 (or 3566355364 counting only the distinct ones).

The product of its (nonzero) digits is 122880, while the sum is 35.

Adding to 421400523224240 its reverse (42422325004124), we get a palindrome (463822848228364).

The spelling of 421400523224240 in words is "four hundred twenty-one trillion, four hundred billion, five hundred twenty-three million, two hundred twenty-four thousand, two hundred forty".