120872417 has 4 divisors (see below), whose sum is σ = 121254036. Its totient is φ = 120490800.

The previous prime is 120872399. The next prime is 120872473. The reversal of 120872417 is 714278021.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 714278021 = 613 ⋅1165217.

It can be written as a sum of positive squares in 2 ways, for example, as 45373696 + 75498721 = 6736^2 + 8689^2 .

It is a cyclic number.

It is not a de Polignac number, because 120872417 - 2¹⁰ = 120871393 is a prime.

It is a super-2 number, since 2×120872417² = 29220282382843778, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (120842417) 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, 190334 + ... + 190967.

It is an arithmetic number, because the mean of its divisors is an integer number (30313509).

Almost surely, 2^120872417 is an apocalyptic number.

It is an amenable number.

120872417 is a deficient number, since it is larger than the sum of its proper divisors (381619).

120872417 is an equidigital number, since it uses as much as digits as its factorization.

120872417 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 381618.

The product of its (nonzero) digits is 6272, while the sum is 32.

The square root of 120872417 is about 10994.1992432373. The cubic root of 120872417 is about 494.4348438858.

The spelling of 120872417 in words is "one hundred twenty million, eight hundred seventy-two thousand, four hundred seventeen".