123505001 has 4 divisors (see below), whose sum is σ = 126843012. Its totient is φ = 120166992.

The previous prime is 123504991. The next prime is 123505003. The reversal of 123505001 is 100505321.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 56265001 + 67240000 = 7501^2 + 8200^2 .

It is a cyclic number.

It is not a de Polignac number, because 123505001 - 2¹⁸ = 123242857 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (123505003) 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, 1668950 + ... + 1669023.

It is an arithmetic number, because the mean of its divisors is an integer number (31710753).

Almost surely, 2^123505001 is an apocalyptic number.

It is an amenable number.

123505001 is a deficient number, since it is larger than the sum of its proper divisors (3338011).

123505001 is an equidigital number, since it uses as much as digits as its factorization.

123505001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3338010.

The product of its (nonzero) digits is 150, while the sum is 17.

The square root of 123505001 is about 11113.2803887961. The cubic root of 123505001 is about 497.9986680287.

The spelling of 123505001 in words is "one hundred twenty-three million, five hundred five thousand, one".