123264251 has 4 divisors (see below), whose sum is σ = 134470104. Its totient is φ = 112058400.

The previous prime is 123264247. The next prime is 123264257. The reversal of 123264251 is 152462321.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 152462321 = 11 ⋅13860211.

It is a cyclic number.

It is not a de Polignac number, because 123264251 - 2² = 123264247 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 123264251.

It is not an unprimeable number, because it can be changed into a prime (123264257) 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, 5602910 + ... + 5602931.

It is an arithmetic number, because the mean of its divisors is an integer number (33617526).

Almost surely, 2^123264251 is an apocalyptic number.

123264251 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

123264251 is a deficient number, since it is larger than the sum of its proper divisors (11205853).

123264251 is a wasteful number, since it uses less digits than its factorization.

123264251 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11205852.

The product of its digits is 2880, while the sum is 26.

The square root of 123264251 is about 11102.4434697953. The cubic root of 123264251 is about 497.6748723228.

The spelling of 123264251 in words is "one hundred twenty-three million, two hundred sixty-four thousand, two hundred fifty-one".