342989705 has 16 divisors (see below), whose sum is σ = 438701184. Its totient is φ = 256531200.

The previous prime is 342989681. The next prime is 342989707. The reversal of 342989705 is 507989243.

It is a happy number.

It is not a de Polignac number, because 342989705 - 2¹⁴ = 342973321 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 342989705.

It is not an unprimeable number, because it can be changed into a prime (342989707) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 527 + ... + 26196.

It is an arithmetic number, because the mean of its divisors is an integer number (27418824).

Almost surely, 2^342989705 is an apocalyptic number.

It is an amenable number.

342989705 is a deficient number, since it is larger than the sum of its proper divisors (95711479).

342989705 is a wasteful number, since it uses less digits than its factorization.

342989705 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26896.

The product of its (nonzero) digits is 544320, while the sum is 47.

The square root of 342989705 is about 18519.9812364916. The cubic root of 342989705 is about 699.9929965286.

The spelling of 342989705 in words is "three hundred forty-two million, nine hundred eighty-nine thousand, seven hundred five".