342821534 has 8 divisors (see below), whose sum is σ = 560980728. Its totient is φ = 155827960.

The previous prime is 342821519. The next prime is 342821561. The reversal of 342821534 is 435128243.

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

It is a super-2 number, since 2×342821534² = 235053208348226312, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 342821534.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7791377 + ... + 7791420.

It is an arithmetic number, because the mean of its divisors is an integer number (70122591).

Almost surely, 2^342821534 is an apocalyptic number.

342821534 is a deficient number, since it is larger than the sum of its proper divisors (218159194).

342821534 is a wasteful number, since it uses less digits than its factorization.

342821534 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15582810.

The product of its digits is 23040, while the sum is 32.

The square root of 342821534 is about 18515.4404214429. The cubic root of 342821534 is about 699.8785734956.

Adding to 342821534 its reverse (435128243), we get a palindrome (777949777).

The spelling of 342821534 in words is "three hundred forty-two million, eight hundred twenty-one thousand, five hundred thirty-four".