1236145452 has 12 divisors (see below), whose sum is σ = 2884339416. Its totient is φ = 412048480.

The previous prime is 1236145451. The next prime is 1236145459. The reversal of 1236145452 is 2545416321.

It is a tau number, because it is divible by the number of its divisors (12).

It is an alternating number because its digits alternate between odd and even.

It is not an unprimeable number, because it can be changed into a prime (1236145451) 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, 51506049 + ... + 51506072.

It is an arithmetic number, because the mean of its divisors is an integer number (240361618).

Almost surely, 2^1236145452 is an apocalyptic number.

1236145452 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1236145452 is an abundant number, since it is smaller than the sum of its proper divisors (1648193964).

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

1236145452 is a wasteful number, since it uses less digits than its factorization.

1236145452 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 103012128 (or 103012126 counting only the distinct ones).

The product of its digits is 28800, while the sum is 33.

The square root of 1236145452 is about 35158.8602204338. The cubic root of 1236145452 is about 1073.2227209632. Note that the first 3 decimals are identical.

The spelling of 1236145452 in words is "one billion, two hundred thirty-six million, one hundred forty-five thousand, four hundred fifty-two".