1001243434 has 4 divisors (see below), whose sum is σ = 1501865154. Its totient is φ = 500621716.

The previous prime is 1001243431. The next prime is 1001243459. The reversal of 1001243434 is 4343421001.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 4343421001 = 17 ⋅255495353.

It can be written as a sum of positive squares in only one way, i.e., 998370409 + 2873025 = 31597^2 + 1695^2 .

It is a super-2 number, since 2×1001243434² = 2004976828256224712, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1001243431) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 250310857 + ... + 250310860.

Almost surely, 2^1001243434 is an apocalyptic number.

1001243434 is a deficient number, since it is larger than the sum of its proper divisors (500621720).

1001243434 is an equidigital number, since it uses as much as digits as its factorization.

1001243434 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 500621719.

The product of its (nonzero) digits is 1152, while the sum is 22.

The square root of 1001243434 is about 31642.4309116730. The cubic root of 1001243434 is about 1000.4143063266.

Adding to 1001243434 its reverse (4343421001), we get a palindrome (5344664435).

The spelling of 1001243434 in words is "one billion, one million, two hundred forty-three thousand, four hundred thirty-four".