342829778 has 4 divisors (see below), whose sum is σ = 514244670. Its totient is φ = 171414888.

The previous prime is 342829777. The next prime is 342829843. The reversal of 342829778 is 877928243.

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

It can be written as a sum of positive squares in only one way, i.e., 184497889 + 158331889 = 13583^2 + 12583^2 .

It is a super-4 number, since 4×342829778⁴ (a number of 35 digits) contains 4444 as substring.

It is not an unprimeable number, because it can be changed into a prime (342829777) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 85707443 + ... + 85707446.

Almost surely, 2^342829778 is an apocalyptic number.

342829778 is a deficient number, since it is larger than the sum of its proper divisors (171414892).

342829778 is a wasteful number, since it uses less digits than its factorization.

342829778 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 171414891.

The product of its digits is 1354752, while the sum is 50.

The square root of 342829778 is about 18515.6630451086. The cubic root of 342829778 is about 699.8841835601.

The spelling of 342829778 in words is "three hundred forty-two million, eight hundred twenty-nine thousand, seven hundred seventy-eight".