42120343323 has 6 divisors (see below), whose sum is σ = 60840495924. Its totient is φ = 28080228876.

The previous prime is 42120343319. The next prime is 42120343333. The reversal of 42120343323 is 32334302124.

42120343323 is a `hidden beast` number, since 4 + 2 + 1 + 203 + 433 + 23 = 666.

It is not a de Polignac number, because 42120343323 - 2² = 42120343319 is a prime.

It is not an unprimeable number, because it can be changed into a prime (42120343303) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2340019065 + ... + 2340019082.

It is an arithmetic number, because the mean of its divisors is an integer number (10140082654).

Almost surely, 2^42120343323 is an apocalyptic number.

42120343323 is a deficient number, since it is larger than the sum of its proper divisors (18720152601).

42120343323 is a wasteful number, since it uses less digits than its factorization.

42120343323 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4680038153 (or 4680038150 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 27.

Adding to 42120343323 its reverse (32334302124), we get a palindrome (74454645447).

The spelling of 42120343323 in words is "forty-two billion, one hundred twenty million, three hundred forty-three thousand, three hundred twenty-three".