123722263 has 4 divisors (see below), whose sum is σ = 141396880. Its totient is φ = 106047648.

The previous prime is 123722251. The next prime is 123722279. The reversal of 123722263 is 362227321.

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

It is a de Polignac number, because none of the positive numbers 2^k-123722263 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123722293) 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, 8837298 + ... + 8837311.

It is an arithmetic number, because the mean of its divisors is an integer number (35349220).

Almost surely, 2^123722263 is an apocalyptic number.

123722263 is a deficient number, since it is larger than the sum of its proper divisors (17674617).

123722263 is an equidigital number, since it uses as much as digits as its factorization.

123722263 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17674616.

The product of its digits is 6048, while the sum is 28.

The square root of 123722263 is about 11123.0509753395. The cubic root of 123722263 is about 498.2905126335.

Adding to 123722263 its reverse (362227321), we get a palindrome (485949584).

It can be divided in two parts, 1237 and 22263, that multiplied together give a triangular number (27539331 = T₇₄₂₁).

The spelling of 123722263 in words is "one hundred twenty-three million, seven hundred twenty-two thousand, two hundred sixty-three".