123550507 has 4 divisors (see below), whose sum is σ = 126563976. Its totient is φ = 120537040.

The previous prime is 123550501. The next prime is 123550513. The reversal of 123550507 is 705055321.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 705055321 = 443 ⋅1591547.

It is an interprime number because it is at equal distance from previous prime (123550501) and next prime (123550513).

It is a cyclic number.

It is not a de Polignac number, because 123550507 - 2²³ = 115161899 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (123550501) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1506673 + ... + 1506754.

It is an arithmetic number, because the mean of its divisors is an integer number (31640994).

Almost surely, 2^123550507 is an apocalyptic number.

123550507 is a deficient number, since it is larger than the sum of its proper divisors (3013469).

123550507 is an equidigital number, since it uses as much as digits as its factorization.

123550507 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3013468.

The product of its (nonzero) digits is 5250, while the sum is 28.

The square root of 123550507 is about 11115.3275705217. The cubic root of 123550507 is about 498.0598238374.

The spelling of 123550507 in words is "one hundred twenty-three million, five hundred fifty thousand, five hundred seven".