123768481 has 4 divisors (see below), whose sum is σ = 124113600. Its totient is φ = 123423364.

The previous prime is 123768443. The next prime is 123768493. The reversal of 123768481 is 184867321.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 184867321 = 19 ⋅9729859.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-123768481 is a prime.

It is a super-2 number, since 2×123768481² = 30637273778094722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (123768581) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 172021 + ... + 172738.

It is an arithmetic number, because the mean of its divisors is an integer number (31028400).

Almost surely, 2^123768481 is an apocalyptic number.

It is an amenable number.

123768481 is a deficient number, since it is larger than the sum of its proper divisors (345119).

123768481 is an equidigital number, since it uses as much as digits as its factorization.

123768481 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 345118.

The product of its digits is 64512, while the sum is 40.

The square root of 123768481 is about 11125.1283588101. The cubic root of 123768481 is about 498.3525524616.

The spelling of 123768481 in words is "one hundred twenty-three million, seven hundred sixty-eight thousand, four hundred eighty-one".