123956533 has 2 divisors, whose sum is σ = 123956534. Its totient is φ = 123956532.

The previous prime is 123956509. The next prime is 123956543. The reversal of 123956533 is 335659321.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 109348849 + 14607684 = 10457^2 + 3822^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-123956533 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 123956492 and 123956501.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (123956543) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61978266 + 61978267.

It is an arithmetic number, because the mean of its divisors is an integer number (61978267).

Almost surely, 2^123956533 is an apocalyptic number.

It is an amenable number.

123956533 is a deficient number, since it is larger than the sum of its proper divisors (1).

123956533 is an equidigital number, since it uses as much as digits as its factorization.

123956533 is an evil number, because the sum of its binary digits is even.

The product of its digits is 72900, while the sum is 37.

The square root of 123956533 is about 11133.5768286746. The cubic root of 123956533 is about 498.6048212401.

The spelling of 123956533 in words is "one hundred twenty-three million, nine hundred fifty-six thousand, five hundred thirty-three".