342798557 has 4 divisors (see below), whose sum is σ = 362963196. Its totient is φ = 322633920.

The previous prime is 342798517. The next prime is 342798559. The reversal of 342798557 is 755897243.

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

It can be written as a sum of positive squares in 2 ways, for example, as 162460516 + 180338041 = 12746^2 + 13429^2 .

It is a cyclic number.

It is not a de Polignac number, because 342798557 - 2²⁰ = 341749981 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (342798559) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10082294 + ... + 10082327.

It is an arithmetic number, because the mean of its divisors is an integer number (90740799).

Almost surely, 2^342798557 is an apocalyptic number.

It is an amenable number.

342798557 is a deficient number, since it is larger than the sum of its proper divisors (20164639).

342798557 is a wasteful number, since it uses less digits than its factorization.

342798557 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20164638.

The product of its digits is 2116800, while the sum is 50.

The square root of 342798557 is about 18514.8199289110. The cubic root of 342798557 is about 699.8629371099.

The spelling of 342798557 in words is "three hundred forty-two million, seven hundred ninety-eight thousand, five hundred fifty-seven".