340121243 has 32 divisors (see below), whose sum is σ = 442920960. Its totient is φ = 253440000.

The previous prime is 340121233. The next prime is 340121273. The reversal of 340121243 is 342121043.

It is not a de Polignac number, because 340121243 - 2¹⁰ = 340120219 is a prime.

It is not an unprimeable number, because it can be changed into a prime (340121203) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 211643 + ... + 213243.

It is an arithmetic number, because the mean of its divisors is an integer number (13841280).

Almost surely, 2^340121243 is an apocalyptic number.

340121243 is a deficient number, since it is larger than the sum of its proper divisors (102799717).

340121243 is a wasteful number, since it uses less digits than its factorization.

340121243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1739.

The product of its (nonzero) digits is 576, while the sum is 20.

The square root of 340121243 is about 18442.3762839825. The cubic root of 340121243 is about 698.0361575181.

Adding to 340121243 its reverse (342121043), we get a palindrome (682242286).

The spelling of 340121243 in words is "three hundred forty million, one hundred twenty-one thousand, two hundred forty-three".