342850781 has 16 divisors (see below), whose sum is σ = 446793984. Its totient is φ = 255308544.

The previous prime is 342850751. The next prime is 342850787. The reversal of 342850781 is 187058243.

It is a cyclic number.

It is not a de Polignac number, because 342850781 - 2¹⁴ = 342834397 is a prime.

It is a super-2 number, since 2×342850781² = 235093316064619922, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (342850787) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 109265 + ... + 112358.

It is an arithmetic number, because the mean of its divisors is an integer number (27924624).

Almost surely, 2^342850781 is an apocalyptic number.

It is an amenable number.

342850781 is a deficient number, since it is larger than the sum of its proper divisors (103943203).

342850781 is a wasteful number, since it uses less digits than its factorization.

342850781 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 221660.

The product of its (nonzero) digits is 53760, while the sum is 38.

The square root of 342850781 is about 18516.2302048770. The cubic root of 342850781 is about 699.8984757524.

The spelling of 342850781 in words is "three hundred forty-two million, eight hundred fifty thousand, seven hundred eighty-one".