123015420013045 has 32 divisors (see below), whose sum is σ = 170846504939520. Its totient is φ = 83283660682560.

The previous prime is 123015420013007. The next prime is 123015420013049. The reversal of 123015420013045 is 540310024510321.

It is not a de Polignac number, because 123015420013045 - 2¹³ = 123015420004853 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 123015420012998 and 123015420013016.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123015420013049) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 119163550 + ... + 120191440.

It is an arithmetic number, because the mean of its divisors is an integer number (5338953279360).

Almost surely, 2^{123015420013045} is an apocalyptic number.

It is an amenable number.

123015420013045 is a deficient number, since it is larger than the sum of its proper divisors (47831084926475).

123015420013045 is a wasteful number, since it uses less digits than its factorization.

123015420013045 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1071265.

The product of its (nonzero) digits is 14400, while the sum is 31.

Adding to 123015420013045 its reverse (540310024510321), we get a palindrome (663325444523366).

The spelling of 123015420013045 in words is "one hundred twenty-three trillion, fifteen billion, four hundred twenty million, thirteen thousand, forty-five".