120684749 has 4 divisors (see below), whose sum is σ = 125931936. Its totient is φ = 115437564.

The previous prime is 120684737. The next prime is 120684757. The reversal of 120684749 is 947486021.

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, and also an emirpimes, since its reverse is a distinct semiprime: 947486021 = 373 ⋅2540177.

It is a cyclic number.

It is not a de Polignac number, because 120684749 - 2¹² = 120680653 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (120684709) 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, 2623559 + ... + 2623604.

It is an arithmetic number, because the mean of its divisors is an integer number (31482984).

Almost surely, 2^120684749 is an apocalyptic number.

It is an amenable number.

120684749 is a deficient number, since it is larger than the sum of its proper divisors (5247187).

120684749 is an equidigital number, since it uses as much as digits as its factorization.

120684749 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5247186.

The product of its (nonzero) digits is 96768, while the sum is 41.

The square root of 120684749 is about 10985.6610634044. The cubic root of 120684749 is about 494.1788228014.

The spelling of 120684749 in words is "one hundred twenty million, six hundred eighty-four thousand, seven hundred forty-nine".