138028741 has 2 divisors, whose sum is σ = 138028742. Its totient is φ = 138028740.

The previous prime is 138028699. The next prime is 138028747. The reversal of 138028741 is 147820831.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 89378116 + 48650625 = 9454^2 + 6975^2 .

It is a cyclic number.

It is not a de Polignac number, because 138028741 - 2⁹ = 138028229 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 138028697 and 138028706.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (138028747) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 69014370 + 69014371.

It is an arithmetic number, because the mean of its divisors is an integer number (69014371).

Almost surely, 2^138028741 is an apocalyptic number.

It is an amenable number.

138028741 is a deficient number, since it is larger than the sum of its proper divisors (1).

138028741 is an equidigital number, since it uses as much as digits as its factorization.

138028741 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 10752, while the sum is 34.

The square root of 138028741 is about 11748.5633589814. The cubic root of 138028741 is about 516.8007979652.

The spelling of 138028741 in words is "one hundred thirty-eight million, twenty-eight thousand, seven hundred forty-one".