123506641 has 8 divisors (see below), whose sum is σ = 124407360. Its totient is φ = 122609712.

The previous prime is 123506633. The next prime is 123506653. The reversal of 123506641 is 146605321.

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 123506641 - 2³ = 123506633 is a prime.

It is a super-2 number, since 2×123506641² = 30507780742205762, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (123506671) 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, 97470 + ... + 98728.

It is an arithmetic number, because the mean of its divisors is an integer number (15550920).

Almost surely, 2^123506641 is an apocalyptic number.

It is an amenable number.

123506641 is a deficient number, since it is larger than the sum of its proper divisors (900719).

123506641 is a wasteful number, since it uses less digits than its factorization.

123506641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1895.

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

The square root of 123506641 is about 11113.3541741456. The cubic root of 123506641 is about 498.0008722962. Note that the first 3 decimals are identical.

The spelling of 123506641 in words is "one hundred twenty-three million, five hundred six thousand, six hundred forty-one".