123414521 has 4 divisors (see below), whose sum is σ = 123437412. Its totient is φ = 123391632.

The previous prime is 123414493. The next prime is 123414539. The reversal of 123414521 is 125414321.

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 69538921 + 53875600 = 8339^2 + 7340^2 .

It is a cyclic number.

It is not a de Polignac number, because 123414521 - 2¹⁰ = 123413497 is a prime.

It is a super-2 number, since 2×123414521² = 30462287987318882, which contains 22 as substring.

It is an alternating number because its digits alternate between odd and even.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (123414541) 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, 1595 + ... + 15791.

It is an arithmetic number, because the mean of its divisors is an integer number (30859353).

Almost surely, 2^123414521 is an apocalyptic number.

It is an amenable number.

123414521 is a deficient number, since it is larger than the sum of its proper divisors (22891).

123414521 is an equidigital number, since it uses as much as digits as its factorization.

123414521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22890.

The product of its digits is 960, while the sum is 23.

The square root of 123414521 is about 11109.2088377166. The cubic root of 123414521 is about 497.8770267267.

Adding to 123414521 its reverse (125414321), we get a palindrome (248828842).

The spelling of 123414521 in words is "one hundred twenty-three million, four hundred fourteen thousand, five hundred twenty-one".