342071857 has 4 divisors (see below), whose sum is σ = 343503360. Its totient is φ = 340640356.

The previous prime is 342071843. The next prime is 342071881. The reversal of 342071857 is 758170243.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 758170243 = 19 ⋅39903697.

It is a cyclic number.

It is not a de Polignac number, because 342071857 - 2⁷ = 342071729 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (342071827) 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 in 3 ways as a sum of consecutive naturals, for example, 715393 + ... + 715870.

It is an arithmetic number, because the mean of its divisors is an integer number (85875840).

Almost surely, 2^342071857 is an apocalyptic number.

It is an amenable number.

342071857 is a deficient number, since it is larger than the sum of its proper divisors (1431503).

342071857 is a wasteful number, since it uses less digits than its factorization.

342071857 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1431502.

The product of its (nonzero) digits is 47040, while the sum is 37.

The square root of 342071857 is about 18495.1846976450. The cubic root of 342071857 is about 699.3680398420.

The spelling of 342071857 in words is "three hundred forty-two million, seventy-one thousand, eight hundred fifty-seven".