1211200142 has 8 divisors (see below), whose sum is σ = 1826312832. Its totient is φ = 602429200.

The previous prime is 1211200141. The next prime is 1211200153. The reversal of 1211200142 is 2410021121.

It is a happy number.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1211200141) 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 3 ways as a sum of consecutive naturals, for example, 1584959 + ... + 1585722.

It is an arithmetic number, because the mean of its divisors is an integer number (228289104).

Almost surely, 2^1211200142 is an apocalyptic number.

1211200142 is a deficient number, since it is larger than the sum of its proper divisors (615112690).

1211200142 is a wasteful number, since it uses less digits than its factorization.

1211200142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3170874.

The product of its (nonzero) digits is 32, while the sum is 14.

The square root of 1211200142 is about 34802.3008147450. The cubic root of 1211200142 is about 1065.9544272388.

Adding to 1211200142 its reverse (2410021121), we get a palindrome (3621221263).

The spelling of 1211200142 in words is "one billion, two hundred eleven million, two hundred thousand, one hundred forty-two".