120400002353 has 4 divisors (see below), whose sum is σ = 125634785088. Its totient is φ = 115165219620.

The previous prime is 120400002347. The next prime is 120400002367. The reversal of 120400002353 is 353200004021.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 120400002353 - 2¹⁰ = 120400001329 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (120400001353) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2617391333 + ... + 2617391378.

It is an arithmetic number, because the mean of its divisors is an integer number (31408696272).

Almost surely, 2^120400002353 is an apocalyptic number.

It is an amenable number.

120400002353 is a deficient number, since it is larger than the sum of its proper divisors (5234782735).

120400002353 is an equidigital number, since it uses as much as digits as its factorization.

120400002353 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5234782734.

The product of its (nonzero) digits is 720, while the sum is 20.

Adding to 120400002353 its reverse (353200004021), we get a palindrome (473600006374).

The spelling of 120400002353 in words is "one hundred twenty billion, four hundred million, two thousand, three hundred fifty-three".