1245134867 has 4 divisors (see below), whose sum is σ = 1265546976. Its totient is φ = 1224722760.

The previous prime is 1245134837. The next prime is 1245134873. The reversal of 1245134867 is 7684315421.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1245134867 - 2²⁸ = 976699411 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1245134827) 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, 10205963 + ... + 10206084.

It is an arithmetic number, because the mean of its divisors is an integer number (316386744).

Almost surely, 2^1245134867 is an apocalyptic number.

1245134867 is a deficient number, since it is larger than the sum of its proper divisors (20412109).

1245134867 is an equidigital number, since it uses as much as digits as its factorization.

1245134867 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20412108.

The product of its digits is 161280, while the sum is 41.

The square root of 1245134867 is about 35286.4686105028. The cubic root of 1245134867 is about 1075.8179797756.

The spelling of 1245134867 in words is "one billion, two hundred forty-five million, one hundred thirty-four thousand, eight hundred sixty-seven".