120343257 has 12 divisors (see below), whose sum is σ = 174236244. Its totient is φ = 80040960.

The previous prime is 120343229. The next prime is 120343261. The reversal of 120343257 is 752343021.

It can be written as a sum of positive squares in 2 ways, for example, as 69705801 + 50637456 = 8349^2 + 7116^2 .

It is not a de Polignac number, because 120343257 - 2⁶ = 120343193 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 120343257.

It is not an unprimeable number, because it can be changed into a prime (120343297) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 11544 + ... + 19337.

It is an arithmetic number, because the mean of its divisors is an integer number (14519687).

Almost surely, 2^120343257 is an apocalyptic number.

It is an amenable number.

120343257 is a deficient number, since it is larger than the sum of its proper divisors (53892987).

120343257 is a wasteful number, since it uses less digits than its factorization.

120343257 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31320 (or 31317 counting only the distinct ones).

The product of its (nonzero) digits is 5040, while the sum is 27.

The square root of 120343257 is about 10970.1074288268. The cubic root of 120343257 is about 493.7122696800.

Adding to 120343257 its reverse (752343021), we get a palindrome (872686278).

The spelling of 120343257 in words is "one hundred twenty million, three hundred forty-three thousand, two hundred fifty-seven".