1243465252 has 6 divisors (see below), whose sum is σ = 2176064198. Its totient is φ = 621732624.

The previous prime is 1243465243. The next prime is 1243465259. The reversal of 1243465252 is 2525643421.

It can be written as a sum of positive squares in only one way, i.e., 879952896 + 363512356 = 29664^2 + 19066^2 .

It is not an unprimeable number, because it can be changed into a prime (1243465259) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 155433153 + ... + 155433160.

Almost surely, 2^1243465252 is an apocalyptic number.

It is an amenable number.

1243465252 is a deficient number, since it is larger than the sum of its proper divisors (932598946).

1243465252 is a wasteful number, since it uses less digits than its factorization.

1243465252 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 310866317 (or 310866315 counting only the distinct ones).

The product of its digits is 57600, while the sum is 34.

The square root of 1243465252 is about 35262.8026679673. The cubic root of 1243465252 is about 1075.3369059762.

The spelling of 1243465252 in words is "one billion, two hundred forty-three million, four hundred sixty-five thousand, two hundred fifty-two".