120653 has 4 divisors (see below), whose sum is σ = 129948. Its totient is φ = 111360.

The previous prime is 120647. The next prime is 120661. The reversal of 120653 is 356021.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 356021 = 73 ⋅4877.

It can be written as a sum of positive squares in 2 ways, for example, as 64009 + 56644 = 253^2 + 238^2 .

It is a cyclic number.

It is not a de Polignac number, because 120653 - 2⁸ = 120397 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (120623) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4628 + ... + 4653.

It is an arithmetic number, because the mean of its divisors is an integer number (32487).

2¹²⁰⁶⁵³ is an apocalyptic number.

120653 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

120653 is a deficient number, since it is larger than the sum of its proper divisors (9295).

120653 is an equidigital number, since it uses as much as digits as its factorization.

120653 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9294.

The product of its (nonzero) digits is 180, while the sum is 17.

The square root of 120653 is about 347.3514070793. The cubic root of 120653 is about 49.4135483828.

Adding to 120653 its reverse (356021), we get a palindrome (476674).

The spelling of 120653 in words is "one hundred twenty thousand, six hundred fifty-three".