12120787 has 6 divisors (see below), whose sum is σ = 14099748. Its totient is φ = 10389204.

The previous prime is 12120781. The next prime is 12120833. The reversal of 12120787 is 78702121.

It is not a de Polignac number, because 12120787 - 2¹⁵ = 12088019 is a prime.

It is a Duffinian number.

It is a zygodrome in base 5.

It is not an unprimeable number, because it can be changed into a prime (12120781) 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, 123633 + ... + 123730.

It is an arithmetic number, because the mean of its divisors is an integer number (2349958).

Almost surely, 2^12120787 is an apocalyptic number.

12120787 is a deficient number, since it is larger than the sum of its proper divisors (1978961).

12120787 is an equidigital number, since it uses as much as digits as its factorization.

12120787 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 247377 (or 247370 counting only the distinct ones).

The product of its (nonzero) digits is 1568, while the sum is 28.

The square root of 12120787 is about 3481.4920651927. The cubic root of 12120787 is about 229.7084333151.

The spelling of 12120787 in words is "twelve million, one hundred twenty thousand, seven hundred eighty-seven".