1442404042 has 4 divisors (see below), whose sum is σ = 2163606066. Its totient is φ = 721202020.

The previous prime is 1442404031. The next prime is 1442404091. The reversal of 1442404042 is 2404042441.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 2404042441 = 14149 ⋅169909.

It can be written as a sum of positive squares in only one way, i.e., 1023424081 + 418979961 = 31991^2 + 20469^2 .

It is a junction number, because it is equal to n+sod(n) for n = 1442403998 and 1442404016.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 360601009 + ... + 360601012.

Almost surely, 2^1442404042 is an apocalyptic number.

1442404042 is a deficient number, since it is larger than the sum of its proper divisors (721202024).

1442404042 is an equidigital number, since it uses as much as digits as its factorization.

1442404042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 721202023.

The product of its (nonzero) digits is 4096, while the sum is 25.

The square root of 1442404042 is about 37978.9947470967. The cubic root of 1442404042 is about 1129.8712992013.

Adding to 1442404042 its reverse (2404042441), we get a palindrome (3846446483).

The spelling of 1442404042 in words is "one billion, four hundred forty-two million, four hundred four thousand, forty-two".