421230142440445 has 8 divisors (see below), whose sum is σ = 544358953307736. Its totient is φ = 311062259032896.

The previous prime is 421230142440343. The next prime is 421230142440449. The reversal of 421230142440445 is 544044241032124.

It can be written as a sum of positive squares in 4 ways, for example, as 31296125358436 + 389934017082009 = 5594294^2 + 19746747^2 .

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-421230142440445 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 421230142440398 and 421230142440407.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (421230142440449) 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, 3240231864862 + ... + 3240231864991.

It is an arithmetic number, because the mean of its divisors is an integer number (68044869163467).

Almost surely, 2^{421230142440445} is an apocalyptic number.

It is an amenable number.

421230142440445 is a deficient number, since it is larger than the sum of its proper divisors (123128810867291).

421230142440445 is a wasteful number, since it uses less digits than its factorization.

421230142440445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6480463729871.

The product of its (nonzero) digits is 491520, while the sum is 40.

Adding to 421230142440445 its reverse (544044241032124), we get a palindrome (965274383472569).

The spelling of 421230142440445 in words is "four hundred twenty-one trillion, two hundred thirty billion, one hundred forty-two million, four hundred forty thousand, four hundred forty-five".