1243012441 has 4 divisors (see below), whose sum is σ = 1356013584. Its totient is φ = 1130011300.

The previous prime is 1243012423. The next prime is 1243012501. The reversal of 1243012441 is 1442103421.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 1243012441 - 2¹¹ = 1243010393 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1243016441) 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, 56500555 + ... + 56500576.

It is an arithmetic number, because the mean of its divisors is an integer number (339003396).

Almost surely, 2^1243012441 is an apocalyptic number.

1243012441 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1243012441 is a deficient number, since it is larger than the sum of its proper divisors (113001143).

1243012441 is a wasteful number, since it uses less digits than its factorization.

1243012441 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 113001142.

The product of its (nonzero) digits is 768, while the sum is 22.

The square root of 1243012441 is about 35256.3815641935. The cubic root of 1243012441 is about 1075.2063612489.

Adding to 1243012441 its reverse (1442103421), we get a palindrome (2685115862).

The spelling of 1243012441 in words is "one billion, two hundred forty-three million, twelve thousand, four hundred forty-one".