1200154145 has 8 divisors (see below), whose sum is σ = 1502801856. Its totient is φ = 918378736.

The previous prime is 1200154093. The next prime is 1200154147. The reversal of 1200154145 is 5414510021.

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 1200154145 - 2¹⁰ = 1200153121 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (23).

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 1200154145.

It is not an unprimeable number, because it can be changed into a prime (1200154147) 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 7 ways as a sum of consecutive naturals, for example, 5217947 + ... + 5218176.

It is an arithmetic number, because the mean of its divisors is an integer number (187850232).

Almost surely, 2^1200154145 is an apocalyptic number.

It is an amenable number.

1200154145 is a deficient number, since it is larger than the sum of its proper divisors (302647711).

1200154145 is a wasteful number, since it uses less digits than its factorization.

1200154145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10436151.

The product of its (nonzero) digits is 800, while the sum is 23.

The square root of 1200154145 is about 34643.2409713641. The cubic root of 1200154145 is about 1062.7040682081.

Adding to 1200154145 its reverse (5414510021), we get a palindrome (6614664166).

The spelling of 1200154145 in words is "one billion, two hundred million, one hundred fifty-four thousand, one hundred forty-five".