340102123 has 4 divisors (see below), whose sum is σ = 340653960. Its totient is φ = 339550288.

The previous prime is 340102097. The next prime is 340102129. The reversal of 340102123 is 321201043.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 321201043 = 17 ⋅18894179.

It is a cyclic number.

It is not a de Polignac number, because 340102123 - 2²¹ = 338004971 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 340102097 and 340102106.

It is not an unprimeable number, because it can be changed into a prime (340102129) 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, 274993 + ... + 276226.

It is an arithmetic number, because the mean of its divisors is an integer number (85163490).

Almost surely, 2^340102123 is an apocalyptic number.

340102123 is a deficient number, since it is larger than the sum of its proper divisors (551837).

340102123 is an equidigital number, since it uses as much as digits as its factorization.

340102123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 551836.

The product of its (nonzero) digits is 144, while the sum is 16.

The square root of 340102123 is about 18441.8579053196. The cubic root of 340102123 is about 698.0230771811.

Adding to 340102123 its reverse (321201043), we get a palindrome (661303166).

The spelling of 340102123 in words is "three hundred forty million, one hundred two thousand, one hundred twenty-three".