349540042 has 8 divisors (see below), whose sum is σ = 524397600. Its totient is φ = 174740844.

The previous prime is 349540007. The next prime is 349540063. The reversal of 349540042 is 240045943.

It is a happy number.

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

It is a super-2 number, since 2×349540042² = 244356481922723528, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 349539986 and 349540013.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6459 + ... + 27217.

It is an arithmetic number, because the mean of its divisors is an integer number (65549700).

Almost surely, 2^349540042 is an apocalyptic number.

349540042 is a deficient number, since it is larger than the sum of its proper divisors (174857558).

349540042 is a wasteful number, since it uses less digits than its factorization.

349540042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29180.

The product of its (nonzero) digits is 17280, while the sum is 31.

The square root of 349540042 is about 18695.9899978578. The cubic root of 349540042 is about 704.4210272630.

Adding to 349540042 its reverse (240045943), we get a palindrome (589585985).

The spelling of 349540042 in words is "three hundred forty-nine million, five hundred forty thousand, forty-two".