123001505 has 16 divisors (see below), whose sum is σ = 165374784. Its totient is φ = 87036480.

The previous prime is 123001469. The next prime is 123001507. The reversal of 123001505 is 505100321.

It is a de Polignac number, because none of the positive numbers 2^k-123001505 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (123001507) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 28187 + ... + 32256.

It is an arithmetic number, because the mean of its divisors is an integer number (10335924).

Almost surely, 2^123001505 is an apocalyptic number.

It is an amenable number.

123001505 is a deficient number, since it is larger than the sum of its proper divisors (42373279).

123001505 is a wasteful number, since it uses less digits than its factorization.

123001505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60496.

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

The square root of 123001505 is about 11090.6043568419. The cubic root of 123001505 is about 497.3210116792.

Adding to 123001505 its reverse (505100321), we get a palindrome (628101826).

The spelling of 123001505 in words is "one hundred twenty-three million, one thousand, five hundred five".