120642415 has 16 divisors (see below), whose sum is σ = 146519136. Its totient is φ = 95356800.

The previous prime is 120642413. The next prime is 120642439. The reversal of 120642415 is 514246021.

It is a happy number.

It is not a de Polignac number, because 120642415 - 2¹ = 120642413 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 120642415.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (120642413) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 182185 + ... + 182845.

It is an arithmetic number, because the mean of its divisors is an integer number (9157446).

Almost surely, 2^120642415 is an apocalyptic number.

120642415 is a deficient number, since it is larger than the sum of its proper divisors (25876721).

120642415 is a wasteful number, since it uses less digits than its factorization.

120642415 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1050.

The product of its (nonzero) digits is 1920, while the sum is 25.

The square root of 120642415 is about 10983.7341100374. The cubic root of 120642415 is about 494.1210330831.

Adding to 120642415 its reverse (514246021), we get a palindrome (634888436).

The spelling of 120642415 in words is "one hundred twenty million, six hundred forty-two thousand, four hundred fifteen".