1267157 has 2 divisors, whose sum is σ = 1267158. Its totient is φ = 1267156.

The previous prime is 1267151. The next prime is 1267159. The reversal of 1267157 is 7517621.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1168561 + 98596 = 1081^2 + 314^2 .

It is a cyclic number.

It is not a de Polignac number, because 1267157 - 2¹⁴ = 1250773 is a prime.

Together with 1267159, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1267151) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 633578 + 633579.

It is an arithmetic number, because the mean of its divisors is an integer number (633579).

2^1267157 is an apocalyptic number.

It is an amenable number.

1267157 is a deficient number, since it is larger than the sum of its proper divisors (1).

1267157 is an equidigital number, since it uses as much as digits as its factorization.

1267157 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2940, while the sum is 29.

The square root of 1267157 is about 1125.6806829648. The cubic root of 1267157 is about 108.2123451394.

The spelling of 1267157 in words is "one million, two hundred sixty-seven thousand, one hundred fifty-seven".