1242336167 has 4 divisors (see below), whose sum is σ = 1243978056. Its totient is φ = 1240694280.

The previous prime is 1242336163. The next prime is 1242336239. The reversal of 1242336167 is 7616332421.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 7616332421 = 467 ⋅16309063.

It is a cyclic number.

It is not a de Polignac number, because 1242336167 - 2² = 1242336163 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1242336163) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 819809 + ... + 821322.

It is an arithmetic number, because the mean of its divisors is an integer number (310994514).

Almost surely, 2^1242336167 is an apocalyptic number.

1242336167 is a deficient number, since it is larger than the sum of its proper divisors (1641889).

1242336167 is an equidigital number, since it uses as much as digits as its factorization.

1242336167 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1641888.

The product of its digits is 36288, while the sum is 35.

The square root of 1242336167 is about 35246.7894566299. The cubic root of 1242336167 is about 1075.0113334302.

Adding to 1242336167 its reverse (7616332421), we get a palindrome (8858668588).

The spelling of 1242336167 in words is "one billion, two hundred forty-two million, three hundred thirty-six thousand, one hundred sixty-seven".