139618241 has 8 divisors (see below), whose sum is σ = 159698880. Its totient is φ = 119571408.

The previous prime is 139618231. The next prime is 139618261. The reversal of 139618241 is 142816931.

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 139618241 - 2¹⁰ = 139617217 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (139618231) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1130 + ... + 16748.

It is an arithmetic number, because the mean of its divisors is an integer number (19962360).

Almost surely, 2^139618241 is an apocalyptic number.

It is an amenable number.

139618241 is a deficient number, since it is larger than the sum of its proper divisors (20080639).

139618241 is a wasteful number, since it uses less digits than its factorization.

139618241 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16903.

The product of its digits is 10368, while the sum is 35.

The square root of 139618241 is about 11816.0162914580. The cubic root of 139618241 is about 518.7770087839. Note that the first 3 decimals are identical.

The spelling of 139618241 in words is "one hundred thirty-nine million, six hundred eighteen thousand, two hundred forty-one".