1293157 has 2 divisors, whose sum is σ = 1293158. Its totient is φ = 1293156.

The previous prime is 1293137. The next prime is 1293169. The reversal of 1293157 is 7513921.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1267876 + 25281 = 1126^2 + 159^2 .

It is a cyclic number.

It is not a de Polignac number, because 1293157 - 2¹⁹ = 768869 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1293137) 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, 646578 + 646579.

It is an arithmetic number, because the mean of its divisors is an integer number (646579).

2^1293157 is an apocalyptic number.

It is an amenable number.

1293157 is a deficient number, since it is larger than the sum of its proper divisors (1).

1293157 is an equidigital number, since it uses as much as digits as its factorization.

1293157 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1890, while the sum is 28.

The square root of 1293157 is about 1137.1706116498. The cubic root of 1293157 is about 108.9474538413.

It can be divided in two parts, 129 and 3157, that multiplied together give a triangular number (407253 = T₉₀₂).

The spelling of 1293157 in words is "one million, two hundred ninety-three thousand, one hundred fifty-seven".