1210042120 has 64 divisors (see below), whose sum is σ = 3115324800. Its totient is φ = 414366720.

The previous prime is 1210042111. The next prime is 1210042129. The reversal of 1210042120 is 212400121.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (1210042111) and next prime (1210042129).

It is a self number, because there is not a number n which added to its sum of digits gives 1210042120.

It is not an unprimeable number, because it can be changed into a prime (1210042129) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 283200 + ... + 287440.

It is an arithmetic number, because the mean of its divisors is an integer number (48676950).

Almost surely, 2^1210042120 is an apocalyptic number.

1210042120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1210042120 is an abundant number, since it is smaller than the sum of its proper divisors (1905282680).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1210042120 is a wasteful number, since it uses less digits than its factorization.

1210042120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5278 (or 5274 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 13.

The square root of 1210042120 is about 34785.6596890155. The cubic root of 1210042120 is about 1065.6146011317.

Adding to 1210042120 its reverse (212400121), we get a palindrome (1422442241).

The spelling of 1210042120 in words is "one billion, two hundred ten million, forty-two thousand, one hundred twenty".