1200142322 has 24 divisors (see below), whose sum is σ = 1874597556. Its totient is φ = 576221184.

The previous prime is 1200142271. The next prime is 1200142337. The reversal of 1200142322 is 2232410021.

It can be written as a sum of positive squares in 6 ways, for example, as 211731601 + 988410721 = 14551^2 + 31439^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 1200142322.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 322778 + ... + 326474.

Almost surely, 2^1200142322 is an apocalyptic number.

1200142322 is the 18518-th centered heptagonal number.

1200142322 is a deficient number, since it is larger than the sum of its proper divisors (674455234).

1200142322 is a wasteful number, since it uses less digits than its factorization.

1200142322 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3950 (or 3921 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 17.

The square root of 1200142322 is about 34643.0703315973. The cubic root of 1200142322 is about 1062.7005785477.

Adding to 1200142322 its reverse (2232410021), we get a palindrome (3432552343).

The spelling of 1200142322 in words is "one billion, two hundred million, one hundred forty-two thousand, three hundred twenty-two".