421431425520452 has 24 divisors (see below), whose sum is σ = 747075284376960. Its totient is φ = 207983021294880.

The previous prime is 421431425520449. The next prime is 421431425520463. The reversal of 421431425520452 is 254025524134124.

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, 208621298 + ... + 210631689.

It is an arithmetic number, because the mean of its divisors is an integer number (31128136849040).

Almost surely, 2^{421431425520452} is an apocalyptic number.

It is an amenable number.

421431425520452 is a deficient number, since it is larger than the sum of its proper divisors (325643858856508).

421431425520452 is a wasteful number, since it uses less digits than its factorization.

421431425520452 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 419256251 (or 419256249 counting only the distinct ones).

The product of its (nonzero) digits is 1536000, while the sum is 44.

Adding to 421431425520452 its reverse (254025524134124), we get a palindrome (675456949654576).

The spelling of 421431425520452 in words is "four hundred twenty-one trillion, four hundred thirty-one billion, four hundred twenty-five million, five hundred twenty thousand, four hundred fifty-two".