1442238421 has 8 divisors (see below), whose sum is σ = 1579505760. Its totient is φ = 1308731952.

The previous prime is 1442238419. The next prime is 1442238463. The reversal of 1442238421 is 1248322441.

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 1442238421 - 2¹ = 1442238419 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1442233421) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 939415 + ... + 940948.

It is an arithmetic number, because the mean of its divisors is an integer number (197438220).

Almost surely, 2^1442238421 is an apocalyptic number.

It is an amenable number.

1442238421 is a deficient number, since it is larger than the sum of its proper divisors (137267339).

1442238421 is a wasteful number, since it uses less digits than its factorization.

1442238421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1880435.

The product of its digits is 12288, while the sum is 31.

The square root of 1442238421 is about 37976.8142555428. The cubic root of 1442238421 is about 1129.8280525169.

The spelling of 1442238421 in words is "one billion, four hundred forty-two million, two hundred thirty-eight thousand, four hundred twenty-one".