1236256122 has 8 divisors (see below), whose sum is σ = 2472512256. Its totient is φ = 412085372.

The previous prime is 1236256117. The next prime is 1236256127. The reversal of 1236256122 is 2216526321.

It is an interprime number because it is at equal distance from previous prime (1236256117) and next prime (1236256127).

It is a sphenic number, since it is the product of 3 distinct primes.

1236256122 is an admirable number.

It is a self number, because there is not a number n which added to its sum of digits gives 1236256122.

It is not an unprimeable number, because it can be changed into a prime (1236256127) 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, 103021338 + ... + 103021349.

It is an arithmetic number, because the mean of its divisors is an integer number (309064032).

Almost surely, 2^1236256122 is an apocalyptic number.

1236256122 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1236256122 is a wasteful number, since it uses less digits than its factorization.

1236256122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 206042692.

The product of its digits is 8640, while the sum is 30.

The square root of 1236256122 is about 35160.4340416895. The cubic root of 1236256122 is about 1073.2547479425.

It can be divided in two parts, 1236256 and 122, that added together give a triangular number (1236378 = T₁₅₇₂).

The spelling of 1236256122 in words is "one billion, two hundred thirty-six million, two hundred fifty-six thousand, one hundred twenty-two".