1260157 has 2 divisors, whose sum is σ = 1260158. Its totient is φ = 1260156.

The previous prime is 1260143. The next prime is 1260163. The reversal of 1260157 is 7510621.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1229881 + 30276 = 1109^2 + 174^2 .

It is a cyclic number.

It is not a de Polignac number, because 1260157 - 2¹¹ = 1258109 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1260167) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 630078 + 630079.

It is an arithmetic number, because the mean of its divisors is an integer number (630079).

2^1260157 is an apocalyptic number.

It is an amenable number.

1260157 is a deficient number, since it is larger than the sum of its proper divisors (1).

1260157 is an equidigital number, since it uses as much as digits as its factorization.

1260157 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 420, while the sum is 22.

The square root of 1260157 is about 1122.5671472121. The cubic root of 1260157 is about 108.0127156953.

Adding to 1260157 its reverse (7510621), we get a palindrome (8770778).

The spelling of 1260157 in words is "one million, two hundred sixty thousand, one hundred fifty-seven".