1121666642 has 8 divisors (see below), whose sum is σ = 1682645376. Its totient is φ = 560784852.

The previous prime is 1121666639. The next prime is 1121666657. The reversal of 1121666642 is 2466661211.

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 23483 + ... + 52865.

It is an arithmetic number, because the mean of its divisors is an integer number (210330672).

Almost surely, 2^1121666642 is an apocalyptic number.

1121666642 is a deficient number, since it is larger than the sum of its proper divisors (560978734).

1121666642 is a wasteful number, since it uses less digits than its factorization.

1121666642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48472.

The product of its digits is 20736, while the sum is 35.

The square root of 1121666642 is about 33491.2920324075. The cubic root of 1121666642 is about 1039.0136858280.

The spelling of 1121666642 in words is "one billion, one hundred twenty-one million, six hundred sixty-six thousand, six hundred forty-two".