138880702 has 4 divisors (see below), whose sum is σ = 208321056. Its totient is φ = 69440350.

The previous prime is 138880661. The next prime is 138880717. The reversal of 138880702 is 207088831.

138880702 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 207088831 = 401 ⋅516431.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34720174 + ... + 34720177.

It is an arithmetic number, because the mean of its divisors is an integer number (52080264).

Almost surely, 2^138880702 is an apocalyptic number.

138880702 is a deficient number, since it is larger than the sum of its proper divisors (69440354).

138880702 is an equidigital number, since it uses as much as digits as its factorization.

138880702 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 69440353.

The product of its (nonzero) digits is 21504, while the sum is 37.

The square root of 138880702 is about 11784.7656743781. The cubic root of 138880702 is about 517.8619086988.

The spelling of 138880702 in words is "one hundred thirty-eight million, eight hundred eighty thousand, seven hundred two".