343640542 has 16 divisors (see below), whose sum is σ = 595173600. Its totient is φ = 145755648.

The previous prime is 343640527. The next prime is 343640543. The reversal of 343640542 is 245046343.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (343640543) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 125167 + ... + 127882.

It is an arithmetic number, because the mean of its divisors is an integer number (37198350).

Almost surely, 2^343640542 is an apocalyptic number.

343640542 is a deficient number, since it is larger than the sum of its proper divisors (251533058).

343640542 is a wasteful number, since it uses less digits than its factorization.

343640542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 253155.

The product of its (nonzero) digits is 34560, while the sum is 31.

The square root of 343640542 is about 18537.5441199745. The cubic root of 343640542 is about 700.4354718927.

Adding to 343640542 its reverse (245046343), we get a palindrome (588686885).

The spelling of 343640542 in words is "three hundred forty-three million, six hundred forty thousand, five hundred forty-two".