342197858 has 4 divisors (see below), whose sum is σ = 513296790. Its totient is φ = 171098928.

The previous prime is 342197851. The next prime is 342197881. The reversal of 342197858 is 858791243.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 858791243 = 181 ⋅4744703.

It can be written as a sum of positive squares in only one way, i.e., 323388289 + 18809569 = 17983^2 + 4337^2 .

It is not an unprimeable number, because it can be changed into a prime (342197851) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 85549463 + ... + 85549466.

Almost surely, 2^342197858 is an apocalyptic number.

342197858 is a deficient number, since it is larger than the sum of its proper divisors (171098932).

342197858 is a wasteful number, since it uses less digits than its factorization.

342197858 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 171098931.

The product of its digits is 483840, while the sum is 47.

The square root of 342197858 is about 18498.5907030779. The cubic root of 342197858 is about 699.4538992437.

The spelling of 342197858 in words is "three hundred forty-two million, one hundred ninety-seven thousand, eight hundred fifty-eight".