123373861 has 8 divisors (see below), whose sum is σ = 133347704. Its totient is φ = 113469120.

The previous prime is 123373849. The next prime is 123373883. The reversal of 123373861 is 168373321.

It can be written as a sum of positive squares in 4 ways, for example, as 16892100 + 106481761 = 4110^2 + 10319^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 123373861 - 2²¹ = 121276709 is a prime.

It is a super-3 number, since 3×123373861³ (a number of 25 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123373841) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13530 + ... + 20731.

It is an arithmetic number, because the mean of its divisors is an integer number (16668463).

Almost surely, 2^123373861 is an apocalyptic number.

It is an amenable number.

123373861 is a deficient number, since it is larger than the sum of its proper divisors (9973843).

123373861 is a wasteful number, since it uses less digits than its factorization.

123373861 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34551.

The product of its digits is 18144, while the sum is 34.

The square root of 123373861 is about 11107.3786736565. The cubic root of 123373861 is about 497.8223440651.

The spelling of 123373861 in words is "one hundred twenty-three million, three hundred seventy-three thousand, eight hundred sixty-one".