139980145 has 8 divisors (see below), whose sum is σ = 168045480. Its totient is φ = 111937920.

The previous prime is 139980133. The next prime is 139980209. The reversal of 139980145 is 541089931.

It can be written as a sum of positive squares in 4 ways, for example, as 4397409 + 135582736 = 2097^2 + 11644^2 .

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

It is not a de Polignac number, because 139980145 - 2⁷ = 139980017 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 139980098 and 139980107.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13261 + ... + 21349.

It is an arithmetic number, because the mean of its divisors is an integer number (21005685).

Almost surely, 2^139980145 is an apocalyptic number.

It is an amenable number.

139980145 is a deficient number, since it is larger than the sum of its proper divisors (28065335).

139980145 is an equidigital number, since it uses as much as digits as its factorization.

139980145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11555.

The product of its (nonzero) digits is 38880, while the sum is 40.

The square root of 139980145 is about 11831.3205095627. The cubic root of 139980145 is about 519.2248621269.

The spelling of 139980145 in words is "one hundred thirty-nine million, nine hundred eighty thousand, one hundred forty-five".