139731075 has 168 divisors, whose sum is σ = 307386576. Its totient is φ = 62208000.

The previous prime is 139731061. The next prime is 139731083. The reversal of 139731075 is 570137931.

It is not a de Polignac number, because 139731075 - 2¹¹ = 139729027 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 167 ways as a sum of consecutive naturals, for example, 3408055 + ... + 3408095.

It is an arithmetic number, because the mean of its divisors is an integer number (1829682).

Almost surely, 2^139731075 is an apocalyptic number.

139731075 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

139731075 is an abundant number, since it is smaller than the sum of its proper divisors (167655501).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

139731075 is a wasteful number, since it uses less digits than its factorization.

139731075 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 97 (or 77 counting only the distinct ones).

The product of its (nonzero) digits is 19845, while the sum is 36.

The square root of 139731075 is about 11820.7899482226. The cubic root of 139731075 is about 518.9167229142.

The spelling of 139731075 in words is "one hundred thirty-nine million, seven hundred thirty-one thousand, seventy-five".