1242044401 has 8 divisors (see below), whose sum is σ = 1337992040. Its totient is φ = 1146154752.

The previous prime is 1242044389. The next prime is 1242044417. The reversal of 1242044401 is 1044402421.

It can be written as a sum of positive squares in 4 ways, for example, as 124880625 + 1117163776 = 11175^2 + 33424^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1242044401 - 2¹¹ = 1242042353 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1242044471) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 36715 + ... + 61903.

It is an arithmetic number, because the mean of its divisors is an integer number (167249005).

Almost surely, 2^1242044401 is an apocalyptic number.

It is an amenable number.

1242044401 is a deficient number, since it is larger than the sum of its proper divisors (95947639).

1242044401 is a wasteful number, since it uses less digits than its factorization.

1242044401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28995.

The product of its (nonzero) digits is 1024, while the sum is 22.

The square root of 1242044401 is about 35242.6503118026. The cubic root of 1242044401 is about 1074.9271704040.

Adding to 1242044401 its reverse (1044402421), we get a palindrome (2286446822).

The spelling of 1242044401 in words is "one billion, two hundred forty-two million, forty-four thousand, four hundred one".