355942139 has 8 divisors (see below), whose sum is σ = 415446528. Its totient is φ = 298601640.

The previous prime is 355942133. The next prime is 355942159. The reversal of 355942139 is 931249553.

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-355942139 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 355942096 and 355942105.

It is not an unprimeable number, because it can be changed into a prime (355942133) 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, 540617 + ... + 541274.

It is an arithmetic number, because the mean of its divisors is an integer number (51930816).

Almost surely, 2^355942139 is an apocalyptic number.

355942139 is a deficient number, since it is larger than the sum of its proper divisors (59504389).

355942139 is a wasteful number, since it uses less digits than its factorization.

355942139 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1081945.

The product of its digits is 145800, while the sum is 41.

The square root of 355942139 is about 18866.4288883721. The cubic root of 355942139 is about 708.6957070059.

The spelling of 355942139 in words is "three hundred fifty-five million, nine hundred forty-two thousand, one hundred thirty-nine".