1442405121 has 8 divisors (see below), whose sum is σ = 2024428320. Its totient is φ = 910992672.

The previous prime is 1442405117. The next prime is 1442405143. The reversal of 1442405121 is 1215042441.

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

It is not a de Polignac number, because 1442405121 - 2² = 1442405117 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1442405091 and 1442405100.

It is not an unprimeable number, because it can be changed into a prime (1442405101) 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, 12652620 + ... + 12652733.

It is an arithmetic number, because the mean of its divisors is an integer number (253053540).

Almost surely, 2^1442405121 is an apocalyptic number.

It is an amenable number.

1442405121 is a deficient number, since it is larger than the sum of its proper divisors (582023199).

1442405121 is a wasteful number, since it uses less digits than its factorization.

1442405121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25305375.

The product of its (nonzero) digits is 1280, while the sum is 24.

The square root of 1442405121 is about 37979.0089523147. The cubic root of 1442405121 is about 1129.8715809372.

Adding to 1442405121 its reverse (1215042441), we get a palindrome (2657447562).

The spelling of 1442405121 in words is "one billion, four hundred forty-two million, four hundred five thousand, one hundred twenty-one".