340138 has 8 divisors (see below), whose sum is σ = 537120. Its totient is φ = 161100.

The previous prime is 340129. The next prime is 340169. The reversal of 340138 is 831043.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a Harshad number since it is a multiple of its sum of digits (19).

It is a nialpdrome in base 13.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4438 + ... + 4513.

It is an arithmetic number, because the mean of its divisors is an integer number (67140).

2³⁴⁰¹³⁸ is an apocalyptic number.

340138 is a gapful number since it is divisible by the number (38) formed by its first and last digit.

340138 is a deficient number, since it is larger than the sum of its proper divisors (196982).

340138 is a wasteful number, since it uses less digits than its factorization.

340138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8972.

The product of its (nonzero) digits is 288, while the sum is 19.

The square root of 340138 is about 583.2135115033. The cubic root of 340138 is about 69.8047620881.

The spelling of 340138 in words is "three hundred forty thousand, one hundred thirty-eight".