1243452516 has 12 divisors (see below), whose sum is σ = 2901389232. Its totient is φ = 414484168.

The previous prime is 1243452499. The next prime is 1243452541. The reversal of 1243452516 is 6152543421.

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

It is an unprimeable number.

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 in 3 ways as a sum of consecutive naturals, for example, 51810510 + ... + 51810533.

It is an arithmetic number, because the mean of its divisors is an integer number (241782436).

Almost surely, 2^1243452516 is an apocalyptic number.

It is an amenable number.

1243452516 is an abundant number, since it is smaller than the sum of its proper divisors (1657936716).

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

1243452516 is a wasteful number, since it uses less digits than its factorization.

1243452516 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 103621050 (or 103621048 counting only the distinct ones).

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

The square root of 1243452516 is about 35262.6220806111. The cubic root of 1243452516 is about 1075.3332346398. Note that the first 3 decimals are identical.

Adding to 1243452516 its reverse (6152543421), we get a palindrome (7395995937).

The spelling of 1243452516 in words is "one billion, two hundred forty-three million, four hundred fifty-two thousand, five hundred sixteen".