1243553114 has 4 divisors (see below), whose sum is σ = 1865329674. Its totient is φ = 621776556.

The previous prime is 1243553081. The next prime is 1243553131. The reversal of 1243553114 is 4113553421.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 4113553421 = 42509 ⋅96769.

It can be written as a sum of positive squares in only one way, i.e., 1198890625 + 44662489 = 34625^2 + 6683^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 310888277 + ... + 310888280.

Almost surely, 2^1243553114 is an apocalyptic number.

1243553114 is a deficient number, since it is larger than the sum of its proper divisors (621776560).

1243553114 is an equidigital number, since it uses as much as digits as its factorization.

1243553114 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 621776559.

The product of its digits is 7200, while the sum is 29.

The square root of 1243553114 is about 35264.0484629885. The cubic root of 1243553114 is about 1075.3622327865.

The spelling of 1243553114 in words is "one billion, two hundred forty-three million, five hundred fifty-three thousand, one hundred fourteen".