420444134211431 has 4 divisors (see below), whose sum is σ = 458666328230664. Its totient is φ = 382221940192200.

The previous prime is 420444134211407. The next prime is 420444134211443. The reversal of 420444134211431 is 134112431444024.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 420444134211431 - 2²⁶ = 420444067102567 is a prime.

It is a super-2 number, since 2×420444134211431² (a number of 30 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (420444134211331) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19111097009600 + ... + 19111097009621.

It is an arithmetic number, because the mean of its divisors is an integer number (114666582057666).

Almost surely, 2^{420444134211431} is an apocalyptic number.

420444134211431 is a deficient number, since it is larger than the sum of its proper divisors (38222194019233).

420444134211431 is a wasteful number, since it uses less digits than its factorization.

420444134211431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38222194019232.

The product of its (nonzero) digits is 147456, while the sum is 38.

Adding to 420444134211431 its reverse (134112431444024), we get a palindrome (554556565655455).

The spelling of 420444134211431 in words is "four hundred twenty trillion, four hundred forty-four billion, one hundred thirty-four million, two hundred eleven thousand, four hundred thirty-one".