123042131553 has 8 divisors (see below), whose sum is σ = 178970373216. Its totient is φ = 74570988800.

The previous prime is 123042131519. The next prime is 123042131557. The reversal of 123042131553 is 355131240321.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 123042131553 - 2⁹ = 123042131041 is a prime.

It is a super-2 number, since 2×123042131553² (a number of 23 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 123042131553.

It is not an unprimeable number, because it can be changed into a prime (123042131557) 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, 1864274688 + ... + 1864274753.

It is an arithmetic number, because the mean of its divisors is an integer number (22371296652).

Almost surely, 2^123042131553 is an apocalyptic number.

It is an amenable number.

123042131553 is a deficient number, since it is larger than the sum of its proper divisors (55928241663).

123042131553 is a wasteful number, since it uses less digits than its factorization.

123042131553 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3728549455.

The product of its (nonzero) digits is 10800, while the sum is 30.

Adding to 123042131553 its reverse (355131240321), we get a palindrome (478173371874).

The spelling of 123042131553 in words is "one hundred twenty-three billion, forty-two million, one hundred thirty-one thousand, five hundred fifty-three".