123136541 has 8 divisors (see below), whose sum is σ = 134555904. Its totient is φ = 111754720.

The previous prime is 123136501. The next prime is 123136561. The reversal of 123136541 is 145631321.

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

It is not a de Polignac number, because 123136541 - 2¹⁸ = 122874397 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 123136541.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123136501) 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, 2285 + ... + 15858.

It is an arithmetic number, because the mean of its divisors is an integer number (16819488).

Almost surely, 2^123136541 is an apocalyptic number.

123136541 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

123136541 is a deficient number, since it is larger than the sum of its proper divisors (11419363).

123136541 is a wasteful number, since it uses less digits than its factorization.

123136541 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18771.

The product of its digits is 2160, while the sum is 26.

The square root of 123136541 is about 11096.6905426798. The cubic root of 123136541 is about 497.5029381239.

Adding to 123136541 its reverse (145631321), we get a palindrome (268767862).

The spelling of 123136541 in words is "one hundred twenty-three million, one hundred thirty-six thousand, five hundred forty-one".