139855241 has 8 divisors (see below), whose sum is σ = 141644544. Its totient is φ = 138075840.

The previous prime is 139855237. The next prime is 139855283. The reversal of 139855241 is 142558931.

It is a happy number.

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 139855241 - 2² = 139855237 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 139855195 and 139855204.

It is not an unprimeable number, because it can be changed into a prime (139855841) 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, 28340 + ... + 32906.

It is an arithmetic number, because the mean of its divisors is an integer number (17705568).

Almost surely, 2^139855241 is an apocalyptic number.

It is an amenable number.

139855241 is a deficient number, since it is larger than the sum of its proper divisors (1789303).

139855241 is a wasteful number, since it uses less digits than its factorization.

139855241 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4951.

The product of its digits is 43200, while the sum is 38.

The square root of 139855241 is about 11826.0407998620. The cubic root of 139855241 is about 519.0703817391.

The spelling of 139855241 in words is "one hundred thirty-nine million, eight hundred fifty-five thousand, two hundred forty-one".