123506461 has 8 divisors (see below), whose sum is σ = 133219800. Its totient is φ = 113823552.

The previous prime is 123506429. The next prime is 123506491. The reversal of 123506461 is 164605321.

It can be written as a sum of positive squares in 4 ways, for example, as 6996025 + 116510436 = 2645^2 + 10794^2 .

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 123506461 - 2⁵ = 123506429 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123506491) 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, 1215 + ... + 15763.

It is an arithmetic number, because the mean of its divisors is an integer number (16652475).

Almost surely, 2^123506461 is an apocalyptic number.

It is an amenable number.

123506461 is a deficient number, since it is larger than the sum of its proper divisors (9713339).

123506461 is a wasteful number, since it uses less digits than its factorization.

123506461 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15215.

The product of its (nonzero) digits is 4320, while the sum is 28.

The square root of 123506461 is about 11113.3460757775. The cubic root of 123506461 is about 498.0006303654. Note that the first 3 decimals are identical.

The spelling of 123506461 in words is "one hundred twenty-three million, five hundred six thousand, four hundred sixty-one".