123435023145 has 96 divisors (see below), whose sum is σ = 232715514240. Its totient is φ = 55700628480.

The previous prime is 123435023141. The next prime is 123435023167. The reversal of 123435023145 is 541320534321.

It is not a de Polignac number, because 123435023145 - 2² = 123435023141 is a prime.

It is not an unprimeable number, because it can be changed into a prime (123435023141) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 22509574 + ... + 22515056.

It is an arithmetic number, because the mean of its divisors is an integer number (2424119940).

Almost surely, 2^123435023145 is an apocalyptic number.

123435023145 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

123435023145 is a deficient number, since it is larger than the sum of its proper divisors (109280491095).

123435023145 is a wasteful number, since it uses less digits than its factorization.

123435023145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5895 (or 5888 counting only the distinct ones).

The product of its (nonzero) digits is 43200, while the sum is 33.

Adding to 123435023145 its reverse (541320534321), we get a palindrome (664755557466).

The spelling of 123435023145 in words is "one hundred twenty-three billion, four hundred thirty-five million, twenty-three thousand, one hundred forty-five".