421431441251 has 8 divisors (see below), whose sum is σ = 435061547904. Its totient is φ = 407803556160.

The previous prime is 421431441241. The next prime is 421431441269. The reversal of 421431441251 is 152144134124.

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 421431441251 - 2²⁶ = 421364332387 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (421431441241) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 165500 + ... + 932873.

It is an arithmetic number, because the mean of its divisors is an integer number (54382693488).

Almost surely, 2^421431441251 is an apocalyptic number.

421431441251 is a deficient number, since it is larger than the sum of its proper divisors (13630106653).

421431441251 is a wasteful number, since it uses less digits than its factorization.

421431441251 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1110781.

The product of its digits is 15360, while the sum is 32.

Adding to 421431441251 its reverse (152144134124), we get a palindrome (573575575375).

The spelling of 421431441251 in words is "four hundred twenty-one billion, four hundred thirty-one million, four hundred forty-one thousand, two hundred fifty-one".