42031201123123 has 16 divisors (see below), whose sum is σ = 43628208408576. Its totient is φ = 40462720058880.

The previous prime is 42031201123111. The next prime is 42031201123129. The reversal of 42031201123123 is 32132110213024.

It is a cyclic number.

It is not a de Polignac number, because 42031201123123 - 2⁵ = 42031201123091 is a prime.

It is a super-2 number, since 2×42031201123123² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42031201123129) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7495315 + ... + 11842387.

It is an arithmetic number, because the mean of its divisors is an integer number (2726763025536).

Almost surely, 2^{42031201123123} is an apocalyptic number.

42031201123123 is a gapful number since it is divisible by the number (43) formed by its first and last digit.

42031201123123 is a deficient number, since it is larger than the sum of its proper divisors (1597007285453).

42031201123123 is a wasteful number, since it uses less digits than its factorization.

42031201123123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4350354.

The product of its (nonzero) digits is 1728, while the sum is 25.

Adding to 42031201123123 its reverse (32132110213024), we get a palindrome (74163311336147).

The spelling of 42031201123123 in words is "forty-two trillion, thirty-one billion, two hundred one million, one hundred twenty-three thousand, one hundred twenty-three".