1200142312 has 8 divisors (see below), whose sum is σ = 2250266850. Its totient is φ = 600071152.

The previous prime is 1200142271. The next prime is 1200142337. The reversal of 1200142312 is 2132410021.

It can be written as a sum of positive squares in only one way, i.e., 665330436 + 534811876 = 25794^2 + 23126^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 75008887 + ... + 75008902.

Almost surely, 2^1200142312 is an apocalyptic number.

It is an amenable number.

1200142312 is a deficient number, since it is larger than the sum of its proper divisors (1050124538).

1200142312 is a wasteful number, since it uses less digits than its factorization.

1200142312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 150017795 (or 150017791 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 16.

The square root of 1200142312 is about 34643.0701872683. The cubic root of 1200142312 is about 1062.7005755961.

Adding to 1200142312 its reverse (2132410021), we get a palindrome (3332552333).

The spelling of 1200142312 in words is "one billion, two hundred million, one hundred forty-two thousand, three hundred twelve".