123545401 has 4 divisors (see below), whose sum is σ = 141194752. Its totient is φ = 105896052.

The previous prime is 123545393. The next prime is 123545413. The reversal of 123545401 is 104545321.

It is a happy number.

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.

It is a cyclic number.

It is not a de Polignac number, because 123545401 - 2³ = 123545393 is a prime.

It is a super-2 number, since 2×123545401² = 30526932216501602, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (123545441) 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, 8824665 + ... + 8824678.

It is an arithmetic number, because the mean of its divisors is an integer number (35298688).

Almost surely, 2^123545401 is an apocalyptic number.

It is an amenable number.

123545401 is a deficient number, since it is larger than the sum of its proper divisors (17649351).

123545401 is an equidigital number, since it uses as much as digits as its factorization.

123545401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17649350.

The product of its (nonzero) digits is 2400, while the sum is 25.

The square root of 123545401 is about 11115.0978853090. The cubic root of 123545401 is about 498.0529625989.

The spelling of 123545401 in words is "one hundred twenty-three million, five hundred forty-five thousand, four hundred one".