42031121023 has 8 divisors (see below), whose sum is σ = 42320346992. Its totient is φ = 41742884736.

The previous prime is 42031120969. The next prime is 42031121039. The reversal of 42031121023 is 32012113024.

It is a happy number.

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 42031121023 - 2¹⁷ = 42030989951 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42031121123) 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, 162090 + ... + 332167.

It is an arithmetic number, because the mean of its divisors is an integer number (5290043374).

Almost surely, 2^42031121023 is an apocalyptic number.

42031121023 is a deficient number, since it is larger than the sum of its proper divisors (289225969).

42031121023 is a wasteful number, since it uses less digits than its factorization.

42031121023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 494841.

The product of its (nonzero) digits is 288, while the sum is 19.

Adding to 42031121023 its reverse (32012113024), we get a palindrome (74043234047).

The spelling of 42031121023 in words is "forty-two billion, thirty-one million, one hundred twenty-one thousand, twenty-three".