1242167 has 2 divisors, whose sum is σ = 1242168. Its totient is φ = 1242166.

The previous prime is 1242151. The next prime is 1242169. The reversal of 1242167 is 7612421.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1242167 - 2⁴ = 1242151 is a prime.

Together with 1242169, 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 (1242169) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 621083 + 621084.

It is an arithmetic number, because the mean of its divisors is an integer number (621084).

2^1242167 is an apocalyptic number.

1242167 is a deficient number, since it is larger than the sum of its proper divisors (1).

1242167 is an equidigital number, since it uses as much as digits as its factorization.

1242167 is an evil number, because the sum of its binary digits is even.

The product of its digits is 672, while the sum is 23.

The square root of 1242167 is about 1114.5254595567. The cubic root of 1242167 is about 107.4962537003.

Adding to 1242167 its reverse (7612421), we get a palindrome (8854588).

The spelling of 1242167 in words is "one million, two hundred forty-two thousand, one hundred sixty-seven".