340256542 has 4 divisors (see below), whose sum is σ = 510384816. Its totient is φ = 170128270.

The previous prime is 340256537. The next prime is 340256563. The reversal of 340256542 is 245652043.

340256542 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 85064134 + ... + 85064137.

It is an arithmetic number, because the mean of its divisors is an integer number (127596204).

Almost surely, 2^340256542 is an apocalyptic number.

340256542 is a deficient number, since it is larger than the sum of its proper divisors (170128274).

340256542 is a wasteful number, since it uses less digits than its factorization.

340256542 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 170128273.

The product of its (nonzero) digits is 28800, while the sum is 31.

The square root of 340256542 is about 18446.0440745435. The cubic root of 340256542 is about 698.1287040003.

The spelling of 340256542 in words is "three hundred forty million, two hundred fifty-six thousand, five hundred forty-two".