421245004531 has 8 divisors (see below), whose sum is σ = 473372313120. Its totient is φ = 371935388352.

The previous prime is 421245004517. The next prime is 421245004549. The reversal of 421245004531 is 135400542124.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 421245004531 - 2¹⁹ = 421244480243 is a prime.

It is a super-2 number, since 2×421245004531² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 421245004493 and 421245004502.

It is not an unprimeable number, because it can be changed into a prime (421245004511) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 704422786 + ... + 704423383.

It is an arithmetic number, because the mean of its divisors is an integer number (59171539140).

Almost surely, 2^421245004531 is an apocalyptic number.

421245004531 is a deficient number, since it is larger than the sum of its proper divisors (52127308589).

421245004531 is a wasteful number, since it uses less digits than its factorization.

421245004531 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1408846205.

The product of its (nonzero) digits is 19200, while the sum is 31.

Adding to 421245004531 its reverse (135400542124), we get a palindrome (556645546655).

The spelling of 421245004531 in words is "four hundred twenty-one billion, two hundred forty-five million, four thousand, five hundred thirty-one".