139284045 has 24 divisors (see below), whose sum is σ = 245388312. Its totient is φ = 73065600.

The previous prime is 139284001. The next prime is 139284083. The reversal of 139284045 is 540482931.

It can be written as a sum of positive squares in 4 ways, for example, as 3305124 + 135978921 = 1818^2 + 11661^2 .

It is not a de Polignac number, because 139284045 - 2⁶ = 139283981 is a prime.

It is a congruent number.

It is an unprimeable number.

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 23 ways as a sum of consecutive naturals, for example, 22626 + ... + 28115.

It is an arithmetic number, because the mean of its divisors is an integer number (10224513).

Almost surely, 2^139284045 is an apocalyptic number.

139284045 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

139284045 is a deficient number, since it is larger than the sum of its proper divisors (106104267).

139284045 is a wasteful number, since it uses less digits than its factorization.

139284045 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50813 (or 50810 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 36.

The square root of 139284045 is about 11801.8661659926. The cubic root of 139284045 is about 518.3627560442.

The spelling of 139284045 in words is "one hundred thirty-nine million, two hundred eighty-four thousand, forty-five".