421251611723 has 8 divisors (see below), whose sum is σ = 424076331936. Its totient is φ = 418427352000.

The previous prime is 421251611717. The next prime is 421251611731. The reversal of 421251611723 is 327116152124.

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 421251611723 - 2⁶ = 421251611659 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (421251611743) 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, 1830365 + ... + 2047617.

It is an arithmetic number, because the mean of its divisors is an integer number (53009541492).

Almost surely, 2^421251611723 is an apocalyptic number.

421251611723 is a deficient number, since it is larger than the sum of its proper divisors (2824720213).

421251611723 is a wasteful number, since it uses less digits than its factorization.

421251611723 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 230245.

The product of its digits is 20160, while the sum is 35.

Adding to 421251611723 its reverse (327116152124), we get a palindrome (748367763847).

The spelling of 421251611723 in words is "four hundred twenty-one billion, two hundred fifty-one million, six hundred eleven thousand, seven hundred twenty-three".