340520245 has 8 divisors (see below), whose sum is σ = 440057016. Its totient is φ = 251461056.

The previous prime is 340520231. The next prime is 340520303. The reversal of 340520245 is 542025043.

It can be written as a sum of positive squares in 4 ways, for example, as 17994564 + 322525681 = 4242^2 + 17959^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 340520245 - 2⁹ = 340519733 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2619322 + ... + 2619451.

It is an arithmetic number, because the mean of its divisors is an integer number (55007127).

Almost surely, 2^340520245 is an apocalyptic number.

It is an amenable number.

340520245 is a deficient number, since it is larger than the sum of its proper divisors (99536771).

340520245 is a wasteful number, since it uses less digits than its factorization.

340520245 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5238791.

The product of its (nonzero) digits is 4800, while the sum is 25.

The square root of 340520245 is about 18453.1906455225. The cubic root of 340520245 is about 698.3090102025.

Adding to 340520245 its reverse (542025043), we get a palindrome (882545288).

The spelling of 340520245 in words is "three hundred forty million, five hundred twenty thousand, two hundred forty-five".