340123140 has 72 divisors (see below), whose sum is σ = 1179097920. Its totient is φ = 77742144.

The previous prime is 340123139. The next prime is 340123153. The reversal of 340123140 is 41321043.

340123140 is a `hidden beast` number, since 340 + 12 + 314 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 133710 + ... + 136229.

It is an arithmetic number, because the mean of its divisors is an integer number (16376360).

Almost surely, 2^340123140 is an apocalyptic number.

340123140 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

340123140 is an abundant number, since it is smaller than the sum of its proper divisors (838974780).

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

340123140 is a wasteful number, since it uses less digits than its factorization.

340123140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 269961 (or 269956 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

The square root of 340123140 is about 18442.4277143764. The cubic root of 340123140 is about 698.0374552633.

Adding to 340123140 its reverse (41321043), we get a palindrome (381444183).

The spelling of 340123140 in words is "three hundred forty million, one hundred twenty-three thousand, one hundred forty".