120702121 has 4 divisors (see below), whose sum is σ = 120727044. Its totient is φ = 120677200.

The previous prime is 120702107. The next prime is 120702139. The reversal of 120702121 is 121207021.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 121207021 = 13 ⋅9323617.

It can be written as a sum of positive squares in 2 ways, for example, as 19900521 + 100801600 = 4461^2 + 10040^2 .

It is a cyclic number.

It is not a de Polignac number, because 120702121 - 2⁷ = 120701993 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 120702095 and 120702104.

It is not an unprimeable number, because it can be changed into a prime (120702151) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2590 + ... + 15751.

It is an arithmetic number, because the mean of its divisors is an integer number (30181761).

Almost surely, 2^120702121 is an apocalyptic number.

It is an amenable number.

120702121 is a deficient number, since it is larger than the sum of its proper divisors (24923).

120702121 is an equidigital number, since it uses as much as digits as its factorization.

120702121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24922.

The product of its (nonzero) digits is 56, while the sum is 16.

The square root of 120702121 is about 10986.4517019828. The cubic root of 120702121 is about 494.2025332335.

Adding to 120702121 its reverse (121207021), we get a palindrome (241909142).

The spelling of 120702121 in words is "one hundred twenty million, seven hundred two thousand, one hundred twenty-one".