156139841 has 8 divisors (see below), whose sum is σ = 183437184. Its totient is φ = 131026320.

The previous prime is 156139829. The next prime is 156139843. The reversal of 156139841 is 148931651.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-156139841 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 156139795 and 156139804.

It is not an unprimeable number, because it can be changed into a prime (156139843) 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, 545801 + ... + 546086.

It is an arithmetic number, because the mean of its divisors is an integer number (22929648).

Almost surely, 2^156139841 is an apocalyptic number.

156139841 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

156139841 is a deficient number, since it is larger than the sum of its proper divisors (27297343).

156139841 is a wasteful number, since it uses less digits than its factorization.

156139841 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1091911.

The product of its digits is 25920, while the sum is 38.

The square root of 156139841 is about 12495.5928630858. The cubic root of 156139841 is about 538.4820665523.

The spelling of 156139841 in words is "one hundred fifty-six million, one hundred thirty-nine thousand, eight hundred forty-one".