123974605 has 16 divisors (see below), whose sum is σ = 153350064. Its totient is φ = 96145920.

The previous prime is 123974603. The next prime is 123974629. The reversal of 123974605 is 506479321.

It can be written as a sum of positive squares in 8 ways, for example, as 964324 + 123010281 = 982^2 + 11091^2 .

It is not a de Polignac number, because 123974605 - 2¹ = 123974603 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (37).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123974603) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 56835 + ... + 58975.

It is an arithmetic number, because the mean of its divisors is an integer number (9584379).

Almost surely, 2^123974605 is an apocalyptic number.

It is an amenable number.

123974605 is a deficient number, since it is larger than the sum of its proper divisors (29375459).

123974605 is a wasteful number, since it uses less digits than its factorization.

123974605 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2496.

The product of its (nonzero) digits is 45360, while the sum is 37.

The square root of 123974605 is about 11134.3883981115. The cubic root of 123974605 is about 498.6290511005.

The spelling of 123974605 in words is "one hundred twenty-three million, nine hundred seventy-four thousand, six hundred five".