920140057 has 2 divisors, whose sum is σ = 920140058. Its totient is φ = 920140056.

The previous prime is 920140033. The next prime is 920140141. The reversal of 920140057 is 750041029.

It is a happy number.

920140057 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 510037056 + 410103001 = 22584^2 + 20251^2 .

It is an emirp because it is prime and its reverse (750041029) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 920140057 - 2¹⁵ = 920107289 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (920140007) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 460070028 + 460070029.

It is an arithmetic number, because the mean of its divisors is an integer number (460070029).

Almost surely, 2^920140057 is an apocalyptic number.

It is an amenable number.

920140057 is a deficient number, since it is larger than the sum of its proper divisors (1).

920140057 is an equidigital number, since it uses as much as digits as its factorization.

920140057 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2520, while the sum is 28.

The square root of 920140057 is about 30333.8104596175. The cubic root of 920140057 is about 972.6381780165.

The spelling of 920140057 in words is "nine hundred twenty million, one hundred forty thousand, fifty-seven".