1161611232142 has 16 divisors (see below), whose sum is σ = 1789547093280. Its totient is φ = 565096199328.

The previous prime is 1161611232137. The next prime is 1161611232161. The reversal of 1161611232142 is 2412321161611.

It is a congruent 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, 4079463 + ... + 4354909.

It is an arithmetic number, because the mean of its divisors is an integer number (111846693330).

Almost surely, 2^{1161611232142} is an apocalyptic number.

1161611232142 is a deficient number, since it is larger than the sum of its proper divisors (627935861138).

1161611232142 is a wasteful number, since it uses less digits than its factorization.

1161611232142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 332475.

The product of its digits is 3456, while the sum is 31.

Adding to 1161611232142 its reverse (2412321161611), we get a palindrome (3573932393753).

The spelling of 1161611232142 in words is "one trillion, one hundred sixty-one billion, six hundred eleven million, two hundred thirty-two thousand, one hundred forty-two".