340252121 has 6 divisors (see below), whose sum is σ = 373996266. Its totient is φ = 309320000.

The previous prime is 340252097. The next prime is 340252141. The reversal of 340252121 is 121252043.

It can be written as a sum of positive squares in only one way, i.e., 339886096 + 366025 = 18436^2 + 605^2 .

It is not a de Polignac number, because 340252121 - 2¹⁰ = 340251097 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 340252093 and 340252102.

It is not an unprimeable number, because it can be changed into a prime (340252141) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1405880 + ... + 1406121.

It is an arithmetic number, because the mean of its divisors is an integer number (62332711).

Almost surely, 2^340252121 is an apocalyptic number.

It is an amenable number.

340252121 is a deficient number, since it is larger than the sum of its proper divisors (33744145).

340252121 is a wasteful number, since it uses less digits than its factorization.

340252121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2812023 (or 2812012 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 20.

The square root of 340252121 is about 18445.9242381617. The cubic root of 340252121 is about 698.1256803599.

The spelling of 340252121 in words is "three hundred forty million, two hundred fifty-two thousand, one hundred twenty-one".