342161778 has 32 divisors (see below), whose sum is σ = 809055360. Its totient is φ = 94389120.

The previous prime is 342161759. The next prime is 342161783. The reversal of 342161778 is 877161243.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 139243 + ... + 141678.

It is an arithmetic number, because the mean of its divisors is an integer number (25282980).

Almost surely, 2^342161778 is an apocalyptic number.

342161778 is an abundant number, since it is smaller than the sum of its proper divisors (466893582).

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

342161778 is a wasteful number, since it uses less digits than its factorization.

342161778 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 280962.

The product of its digits is 56448, while the sum is 39.

The square root of 342161778 is about 18497.6154679461. The cubic root of 342161778 is about 699.4293158211.

The spelling of 342161778 in words is "three hundred forty-two million, one hundred sixty-one thousand, seven hundred seventy-eight".