120687249 has 4 divisors (see below), whose sum is σ = 160916336. Its totient is φ = 80458164.

The previous prime is 120687239. The next prime is 120687251. The reversal of 120687249 is 942786021.

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 not a de Polignac number, because 120687249 - 2⁷ = 120687121 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (120687239) 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, 20114539 + ... + 20114544.

It is an arithmetic number, because the mean of its divisors is an integer number (40229084).

Almost surely, 2^120687249 is an apocalyptic number.

It is an amenable number.

120687249 is a deficient number, since it is larger than the sum of its proper divisors (40229087).

120687249 is an equidigital number, since it uses as much as digits as its factorization.

120687249 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40229086.

The product of its (nonzero) digits is 48384, while the sum is 39.

The square root of 120687249 is about 10985.7748475017. The cubic root of 120687249 is about 494.1822351037.

The spelling of 120687249 in words is "one hundred twenty million, six hundred eighty-seven thousand, two hundred forty-nine".