342509557 has 8 divisors (see below), whose sum is σ = 390554136. Its totient is φ = 297564672.

The previous prime is 342509549. The next prime is 342509567. The reversal of 342509557 is 755905243.

It can be written as a sum of positive squares in 4 ways, for example, as 36469521 + 306040036 = 6039^2 + 17494^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 342509557 - 2³ = 342509549 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 (342509567) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 774688 + ... + 775129.

It is an arithmetic number, because the mean of its divisors is an integer number (48819267).

Almost surely, 2^342509557 is an apocalyptic number.

It is an amenable number.

342509557 is a deficient number, since it is larger than the sum of its proper divisors (48044579).

342509557 is a wasteful number, since it uses less digits than its factorization.

342509557 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1549847.

The product of its (nonzero) digits is 189000, while the sum is 40.

The square root of 342509557 is about 18507.0137245316. The cubic root of 342509557 is about 699.6662061624. Note that the first 3 decimals are identical.

The spelling of 342509557 in words is "three hundred forty-two million, five hundred nine thousand, five hundred fifty-seven".