1210120145 has 8 divisors (see below), whose sum is σ = 1563847656. Its totient is φ = 893627136.

The previous prime is 1210120103. The next prime is 1210120189. The reversal of 1210120145 is 5410210121.

It can be written as a sum of positive squares in 4 ways, for example, as 29235649 + 1180884496 = 5407^2 + 34364^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 1210120145 - 2²⁴ = 1193342929 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9308552 + ... + 9308681.

It is an arithmetic number, because the mean of its divisors is an integer number (195480957).

Almost surely, 2^1210120145 is an apocalyptic number.

It is an amenable number.

1210120145 is a deficient number, since it is larger than the sum of its proper divisors (353727511).

1210120145 is a wasteful number, since it uses less digits than its factorization.

1210120145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18617251.

The product of its (nonzero) digits is 80, while the sum is 17.

The square root of 1210120145 is about 34786.7811819375. The cubic root of 1210120145 is about 1065.6375046849.

Adding to 1210120145 its reverse (5410210121), we get a palindrome (6620330266).

The spelling of 1210120145 in words is "one billion, two hundred ten million, one hundred twenty thousand, one hundred forty-five".