42123011032123 has 8 divisors (see below), whose sum is σ = 48196366875648. Its totient is φ = 36063600898344.

The previous prime is 42123011032087. The next prime is 42123011032129. The reversal of 42123011032123 is 32123011032124.

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 42123011032123 - 2¹⁷ = 42123010901051 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42123011032129) 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, 3486420961 + ... + 3486433042.

It is an arithmetic number, because the mean of its divisors is an integer number (6024545859456).

Almost surely, 2^{42123011032123} is an apocalyptic number.

42123011032123 is a deficient number, since it is larger than the sum of its proper divisors (6073355843525).

42123011032123 is an equidigital number, since it uses as much as digits as its factorization.

42123011032123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6972854873.

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

Adding to 42123011032123 its reverse (32123011032124), we get a palindrome (74246022064247).

Subtracting from 42123011032123 its reverse (32123011032124), we obtain a palindrome (9999999999999).

The spelling of 42123011032123 in words is "forty-two trillion, one hundred twenty-three billion, eleven million, thirty-two thousand, one hundred twenty-three".