342809775 has 144 divisors (see below), whose sum is σ = 783664128. Its totient is φ = 139104000.

The previous prime is 342809759. The next prime is 342809809. The reversal of 342809775 is 577908243.

It is not a de Polignac number, because 342809775 - 2⁴ = 342809759 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 342809775.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 143 ways as a sum of consecutive naturals, for example, 814065 + ... + 814485.

It is an arithmetic number, because the mean of its divisors is an integer number (5442112).

Almost surely, 2^342809775 is an apocalyptic number.

342809775 is a gapful number since it is divisible by the number (35) formed by its first and last digit.

342809775 is an abundant number, since it is smaller than the sum of its proper divisors (440854353).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

342809775 is a wasteful number, since it uses less digits than its factorization.

342809775 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 502 (or 494 counting only the distinct ones).

The product of its (nonzero) digits is 423360, while the sum is 45.

The square root of 342809775 is about 18515.1228729382. The cubic root of 342809775 is about 699.8705713084.

The spelling of 342809775 in words is "three hundred forty-two million, eight hundred nine thousand, seven hundred seventy-five".