138702445 has 8 divisors (see below), whose sum is σ = 190220544. Its totient is φ = 95110224.

The previous prime is 138702383. The next prime is 138702449. The reversal of 138702445 is 544207831.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 138702445 - 2¹³ = 138694253 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 138702445.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (138702449) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1981429 + ... + 1981498.

It is an arithmetic number, because the mean of its divisors is an integer number (23777568).

Almost surely, 2^138702445 is an apocalyptic number.

It is an amenable number.

138702445 is a deficient number, since it is larger than the sum of its proper divisors (51518099).

138702445 is an equidigital number, since it uses as much as digits as its factorization.

138702445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3962939.

The product of its (nonzero) digits is 26880, while the sum is 34.

The square root of 138702445 is about 11777.2002190673. The cubic root of 138702445 is about 517.6402507524.

The spelling of 138702445 in words is "one hundred thirty-eight million, seven hundred two thousand, four hundred forty-five".