340200123 has 4 divisors (see below), whose sum is σ = 453600168. Its totient is φ = 226800080.

The previous prime is 340200079. The next prime is 340200143. The reversal of 340200123 is 321002043.

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

It is a cyclic number.

It is not a de Polignac number, because 340200123 - 2⁶ = 340200059 is a prime.

It is a super-2 number, since 2×340200123² = 231472247378430258, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (340200143) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 56700018 + ... + 56700023.

It is an arithmetic number, because the mean of its divisors is an integer number (113400042).

Almost surely, 2^340200123 is an apocalyptic number.

340200123 is a deficient number, since it is larger than the sum of its proper divisors (113400045).

340200123 is a wasteful number, since it uses less digits than its factorization.

340200123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 113400044.

The product of its (nonzero) digits is 144, while the sum is 15.

The square root of 340200123 is about 18444.5147130522. The cubic root of 340200123 is about 698.0901155671.

Adding to 340200123 its reverse (321002043), we get a palindrome (661202166).

The spelling of 340200123 in words is "three hundred forty million, two hundred thousand, one hundred twenty-three".