123962513 has 4 divisors (see below), whose sum is σ = 124151280. Its totient is φ = 123773748.

The previous prime is 123962497. The next prime is 123962519. The reversal of 123962513 is 315269321.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 315269321 = 859 ⋅367019.

It is a cyclic number.

It is not a de Polignac number, because 123962513 - 2⁴ = 123962497 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 123962513.

It is not an unprimeable number, because it can be changed into a prime (123962519) 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, 93395 + ... + 94712.

It is an arithmetic number, because the mean of its divisors is an integer number (31037820).

Almost surely, 2^123962513 is an apocalyptic number.

It is an amenable number.

123962513 is a deficient number, since it is larger than the sum of its proper divisors (188767).

123962513 is an equidigital number, since it uses as much as digits as its factorization.

123962513 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 188766.

The product of its digits is 9720, while the sum is 32.

The square root of 123962513 is about 11133.8453824364. The cubic root of 123962513 is about 498.6128391284.

The spelling of 123962513 in words is "one hundred twenty-three million, nine hundred sixty-two thousand, five hundred thirteen".