1120540021 has 8 divisors (see below), whose sum is σ = 1129968000. Its totient is φ = 1111131840.

The previous prime is 1120540007. The next prime is 1120540063. The reversal of 1120540021 is 1200450211.

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

It is a cyclic number.

It is not a de Polignac number, because 1120540021 - 2¹¹ = 1120537973 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1120539977 and 1120540004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1120540081) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 122205 + ... + 131053.

It is an arithmetic number, because the mean of its divisors is an integer number (141246000).

Almost surely, 2^1120540021 is an apocalyptic number.

It is an amenable number.

1120540021 is a deficient number, since it is larger than the sum of its proper divisors (9427979).

1120540021 is an equidigital number, since it uses as much as digits as its factorization.

1120540021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9899.

The product of its (nonzero) digits is 80, while the sum is 16.

The square root of 1120540021 is about 33474.4681959251. The cubic root of 1120540021 is about 1038.6657016386.

Adding to 1120540021 its reverse (1200450211), we get a palindrome (2320990232).

The spelling of 1120540021 in words is "one billion, one hundred twenty million, five hundred forty thousand, twenty-one".