1121642571 has 16 divisors (see below), whose sum is σ = 1709938944. Its totient is φ = 640650144.

The previous prime is 1121642519. The next prime is 1121642581. The reversal of 1121642571 is 1752461211.

It is not a de Polignac number, because 1121642571 - 2⁷ = 1121642443 is a prime.

It is a super-3 number, since 3×1121642571³ (a number of 28 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (1121642581) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 41236 + ... + 62798.

It is an arithmetic number, because the mean of its divisors is an integer number (106871184).

Almost surely, 2^1121642571 is an apocalyptic number.

1121642571 is a deficient number, since it is larger than the sum of its proper divisors (588296373).

1121642571 is a wasteful number, since it uses less digits than its factorization.

1121642571 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24050.

The product of its digits is 3360, while the sum is 30.

The square root of 1121642571 is about 33490.9326684104. The cubic root of 1121642571 is about 1039.0062533531.

The spelling of 1121642571 in words is "one billion, one hundred twenty-one million, six hundred forty-two thousand, five hundred seventy-one".