123746401 has 4 divisors (see below), whose sum is σ = 125136900. Its totient is φ = 122355904.

The previous prime is 123746377. The next prime is 123746407. The reversal of 123746401 is 104647321.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 104647321 = 491 ⋅213131.

It can be written as a sum of positive squares in 2 ways, for example, as 24245776 + 99500625 = 4924^2 + 9975^2 .

It is a cyclic number.

It is not a de Polignac number, because 123746401 - 2⁹ = 123745889 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 123746401.

It is not an unprimeable number, because it can be changed into a prime (123746407) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 695116 + ... + 695293.

It is an arithmetic number, because the mean of its divisors is an integer number (31284225).

Almost surely, 2^123746401 is an apocalyptic number.

It is an amenable number.

123746401 is a deficient number, since it is larger than the sum of its proper divisors (1390499).

123746401 is an equidigital number, since it uses as much as digits as its factorization.

123746401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1390498.

The product of its (nonzero) digits is 4032, while the sum is 28.

The square root of 123746401 is about 11124.1359664470. The cubic root of 123746401 is about 498.3229157327.

The spelling of 123746401 in words is "one hundred twenty-three million, seven hundred forty-six thousand, four hundred one".