1121650143 has 8 divisors (see below), whose sum is σ = 1496079408. Its totient is φ = 747493824.

The previous prime is 1121650133. The next prime is 1121650163. The reversal of 1121650143 is 3410561211.

It is a happy number.

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

It is not a de Polignac number, because 1121650143 - 2⁵ = 1121650111 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1121650133) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 58446 + ... + 75227.

It is an arithmetic number, because the mean of its divisors is an integer number (187009926).

Almost surely, 2^1121650143 is an apocalyptic number.

1121650143 is a deficient number, since it is larger than the sum of its proper divisors (374429265).

1121650143 is a wasteful number, since it uses less digits than its factorization.

1121650143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 136473.

The product of its (nonzero) digits is 720, while the sum is 24.

The square root of 1121650143 is about 33491.0457137427. The cubic root of 1121650143 is about 1039.0085913938.

The spelling of 1121650143 in words is "one billion, one hundred twenty-one million, six hundred fifty thousand, one hundred forty-three".