391842141 has 8 divisors (see below), whose sum is σ = 524625024. Its totient is φ = 260143680.

The previous prime is 391842109. The next prime is 391842167. The reversal of 391842141 is 141248193.

It is a happy number.

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

It is not a de Polignac number, because 391842141 - 2⁵ = 391842109 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (391843141) 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, 270261 + ... + 271706.

It is an arithmetic number, because the mean of its divisors is an integer number (65578128).

Almost surely, 2^391842141 is an apocalyptic number.

It is an amenable number.

391842141 is a deficient number, since it is larger than the sum of its proper divisors (132782883).

391842141 is a wasteful number, since it uses less digits than its factorization.

391842141 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 542211.

The product of its digits is 6912, while the sum is 33.

The square root of 391842141 is about 19795.0029300326. The cubic root of 391842141 is about 731.7628882804.

The spelling of 391842141 in words is "three hundred ninety-one million, eight hundred forty-two thousand, one hundred forty-one".