421241143240 has 16 divisors (see below), whose sum is σ = 947792572380. Its totient is φ = 168496457280.

The previous prime is 421241143229. The next prime is 421241143249. The reversal of 421241143240 is 42341142124.

It can be written as a sum of positive squares in 2 ways, for example, as 419989540356 + 1251602884 = 648066^2 + 35378^2 .

It is a junction number, because it is equal to n+sod(n) for n = 421241143199 and 421241143208.

It is not an unprimeable number, because it can be changed into a prime (421241143249) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5265514251 + ... + 5265514330.

Almost surely, 2^421241143240 is an apocalyptic number.

421241143240 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

421241143240 is an abundant number, since it is smaller than the sum of its proper divisors (526551429140).

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

421241143240 is a wasteful number, since it uses less digits than its factorization.

421241143240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10531028592 (or 10531028588 counting only the distinct ones).

The product of its (nonzero) digits is 6144, while the sum is 28.

Adding to 421241143240 its reverse (42341142124), we get a palindrome (463582285364).

The spelling of 421241143240 in words is "four hundred twenty-one billion, two hundred forty-one million, one hundred forty-three thousand, two hundred forty".