42244340202431 has 4 divisors (see below), whose sum is σ = 42244475390664. Its totient is φ = 42244205014200.

The previous prime is 42244340202403. The next prime is 42244340202469. The reversal of 42244340202431 is 13420204344224.

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 42244340202431 - 2⁶ = 42244340202367 is a prime.

It is a super-2 number, since 2×42244340202431² (a number of 28 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 = 42244340202391 and 42244340202400.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42244340202401) 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, 67124300 + ... + 67750721.

It is an arithmetic number, because the mean of its divisors is an integer number (10561118847666).

Almost surely, 2^{42244340202431} is an apocalyptic number.

42244340202431 is a deficient number, since it is larger than the sum of its proper divisors (135188233).

42244340202431 is a wasteful number, since it uses less digits than its factorization.

42244340202431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 135188232.

The product of its (nonzero) digits is 147456, while the sum is 35.

Adding to 42244340202431 its reverse (13420204344224), we get a palindrome (55664544546655).

The spelling of 42244340202431 in words is "forty-two trillion, two hundred forty-four billion, three hundred forty million, two hundred two thousand, four hundred thirty-one".