1238428941 has 4 divisors (see below), whose sum is σ = 1651238592. Its totient is φ = 825619292.

The previous prime is 1238428927. The next prime is 1238428993. The reversal of 1238428941 is 1498248321.

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 a cyclic number.

It is not a de Polignac number, because 1238428941 - 2¹⁷ = 1238297869 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 1238428893 and 1238428902.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1238428901) 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, 206404821 + ... + 206404826.

It is an arithmetic number, because the mean of its divisors is an integer number (412809648).

Almost surely, 2^1238428941 is an apocalyptic number.

It is an amenable number.

1238428941 is a deficient number, since it is larger than the sum of its proper divisors (412809651).

1238428941 is an equidigital number, since it uses as much as digits as its factorization.

1238428941 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 412809650.

The product of its digits is 110592, while the sum is 42.

The square root of 1238428941 is about 35191.3191142361. The cubic root of 1238428941 is about 1073.8831569430.

The spelling of 1238428941 in words is "one billion, two hundred thirty-eight million, four hundred twenty-eight thousand, nine hundred forty-one".