349215242 has 4 divisors (see below), whose sum is σ = 523822866. Its totient is φ = 174607620.

The previous prime is 349215227. The next prime is 349215253. The reversal of 349215242 is 242512943.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 242512943 = 23 ⋅10544041.

It can be written as a sum of positive squares in only one way, i.e., 325116961 + 24098281 = 18031^2 + 4909^2 .

It is a junction number, because it is equal to n+sod(n) for n = 349215199 and 349215208.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 87303809 + ... + 87303812.

Almost surely, 2^349215242 is an apocalyptic number.

349215242 is a deficient number, since it is larger than the sum of its proper divisors (174607624).

349215242 is a wasteful number, since it uses less digits than its factorization.

349215242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 174607623.

The product of its digits is 17280, while the sum is 32.

The square root of 349215242 is about 18687.3016243651. The cubic root of 349215242 is about 704.2027720074.

The spelling of 349215242 in words is "three hundred forty-nine million, two hundred fifteen thousand, two hundred forty-two".