120405502 has 8 divisors (see below), whose sum is σ = 206409456. Its totient is φ = 51602352.

The previous prime is 120405487. The next prime is 120405503. The reversal of 120405502 is 205504021.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 120405502.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (120405503) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4300183 + ... + 4300210.

It is an arithmetic number, because the mean of its divisors is an integer number (25801182).

Almost surely, 2^120405502 is an apocalyptic number.

120405502 is a deficient number, since it is larger than the sum of its proper divisors (86003954).

120405502 is an equidigital number, since it uses as much as digits as its factorization.

120405502 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8600402.

The product of its (nonzero) digits is 400, while the sum is 19.

The square root of 120405502 is about 10972.9440898967. The cubic root of 120405502 is about 493.7973757457.

Adding to 120405502 its reverse (205504021), we get a palindrome (325909523).

The spelling of 120405502 in words is "one hundred twenty million, four hundred five thousand, five hundred two".