138332071 has 2 divisors, whose sum is σ = 138332072. Its totient is φ = 138332070.

The previous prime is 138332053. The next prime is 138332099. The reversal of 138332071 is 170233831.

It is an a-pointer prime, because the next prime (138332099) can be obtained adding 138332071 to its sum of digits (28).

It is a weak prime.

It is an emirp because it is prime and its reverse (170233831) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 138332071 - 2²⁵ = 104777639 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (138332041) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 69166035 + 69166036.

It is an arithmetic number, because the mean of its divisors is an integer number (69166036).

Almost surely, 2^138332071 is an apocalyptic number.

138332071 is a deficient number, since it is larger than the sum of its proper divisors (1).

138332071 is an equidigital number, since it uses as much as digits as its factorization.

138332071 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3024, while the sum is 28.

The square root of 138332071 is about 11761.4655124266. The cubic root of 138332071 is about 517.1790923524.

The spelling of 138332071 in words is "one hundred thirty-eight million, three hundred thirty-two thousand, seventy-one".