421334140525 has 12 divisors (see below), whose sum is σ = 545169740832. Its totient is φ = 322412211440.

The previous prime is 421334140523. The next prime is 421334140531. The reversal of 421334140525 is 525041433124.

It is not a de Polignac number, because 421334140525 - 2¹ = 421334140523 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (421334140523) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 366376939 + ... + 366378088.

It is an arithmetic number, because the mean of its divisors is an integer number (45430811736).

Almost surely, 2^421334140525 is an apocalyptic number.

It is an amenable number.

421334140525 is a deficient number, since it is larger than the sum of its proper divisors (123835600307).

421334140525 is a wasteful number, since it uses less digits than its factorization.

421334140525 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 732755060 (or 732755055 counting only the distinct ones).

The product of its (nonzero) digits is 57600, while the sum is 34.

Adding to 421334140525 its reverse (525041433124), we get a palindrome (946375573649).

The spelling of 421334140525 in words is "four hundred twenty-one billion, three hundred thirty-four million, one hundred forty thousand, five hundred twenty-five".