138124033 has 2 divisors, whose sum is σ = 138124034. Its totient is φ = 138124032.

The previous prime is 138124027. The next prime is 138124067. The reversal of 138124033 is 330421831.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 106853569 + 31270464 = 10337^2 + 5592^2 .

It is a cyclic number.

It is not a de Polignac number, because 138124033 - 2⁵ = 138124001 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 138123989 and 138124007.

It is not a weakly prime, because it can be changed into another prime (138124073) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 69062016 + 69062017.

It is an arithmetic number, because the mean of its divisors is an integer number (69062017).

Almost surely, 2^138124033 is an apocalyptic number.

It is an amenable number.

138124033 is a deficient number, since it is larger than the sum of its proper divisors (1).

138124033 is an equidigital number, since it uses as much as digits as its factorization.

138124033 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1728, while the sum is 25.

The square root of 138124033 is about 11752.6181338458. The cubic root of 138124033 is about 516.9196998997.

Adding to 138124033 its reverse (330421831), we get a palindrome (468545864).

The spelling of 138124033 in words is "one hundred thirty-eight million, one hundred twenty-four thousand, thirty-three".