1120720157 has 2 divisors, whose sum is σ = 1120720158. Its totient is φ = 1120720156.

The previous prime is 1120720147. The next prime is 1120720169. The reversal of 1120720157 is 7510270211.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1018184281 + 102535876 = 31909^2 + 10126^2 .

It is a cyclic number.

It is not a de Polignac number, because 1120720157 - 2⁴ = 1120720141 is a prime.

It is a super-3 number, since 3×1120720157³ (a number of 28 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a zygodrome in base 3.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1120720147) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 560360078 + 560360079.

It is an arithmetic number, because the mean of its divisors is an integer number (560360079).

Almost surely, 2^1120720157 is an apocalyptic number.

It is an amenable number.

1120720157 is a deficient number, since it is larger than the sum of its proper divisors (1).

1120720157 is an equidigital number, since it uses as much as digits as its factorization.

1120720157 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 980, while the sum is 26.

The square root of 1120720157 is about 33477.1587354722. The cubic root of 1120720157 is about 1038.7213566669.

Adding to 1120720157 its reverse (7510270211), we get a palindrome (8630990368).

The spelling of 1120720157 in words is "one billion, one hundred twenty million, seven hundred twenty thousand, one hundred fifty-seven".