1120001656 has 16 divisors (see below), whose sum is σ = 2109257640. Its totient is φ = 557532960.

The previous prime is 1120001621. The next prime is 1120001657. The reversal of 1120001656 is 6561000211.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1120001657) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 306555 + ... + 310186.

Almost surely, 2^1120001656 is an apocalyptic number.

It is an amenable number.

1120001656 is a deficient number, since it is larger than the sum of its proper divisors (989255984).

1120001656 is a wasteful number, since it uses less digits than its factorization.

1120001656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 616974 (or 616970 counting only the distinct ones).

The product of its (nonzero) digits is 360, while the sum is 22.

The square root of 1120001656 is about 33466.4258025861. The cubic root of 1120001656 is about 1038.4993322015.

Adding to 1120001656 its reverse (6561000211), we get a palindrome (7681001867).

The spelling of 1120001656 in words is "one billion, one hundred twenty million, one thousand, six hundred fifty-six".