346172842 has 4 divisors (see below), whose sum is σ = 519259266. Its totient is φ = 173086420.

The previous prime is 346172809. The next prime is 346172843. The reversal of 346172842 is 248271643.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 201668401 + 144504441 = 14201^2 + 12021^2 .

It is not an unprimeable number, because it can be changed into a prime (346172843) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 86543209 + ... + 86543212.

Almost surely, 2^346172842 is an apocalyptic number.

346172842 is a deficient number, since it is larger than the sum of its proper divisors (173086424).

346172842 is a wasteful number, since it uses less digits than its factorization.

346172842 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 173086423.

The product of its digits is 64512, while the sum is 37.

The square root of 346172842 is about 18605.7206794040. The cubic root of 346172842 is about 702.1517746634.

The spelling of 346172842 in words is "three hundred forty-six million, one hundred seventy-two thousand, eight hundred forty-two".