1442625081 has 8 divisors (see below), whose sum is σ = 1923835200. Its totient is φ = 961582512.

The previous prime is 1442625071. The next prime is 1442625089. The reversal of 1442625081 is 1805262441.

It is a happy number.

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

It is not a de Polignac number, because 1442625081 - 2¹⁴ = 1442608697 is a prime.

It is a super-2 number, since 2×1442625081² = 4162334248660513122, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1442625089) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20190 + ... + 57383.

It is an arithmetic number, because the mean of its divisors is an integer number (240479400).

Almost surely, 2^1442625081 is an apocalyptic number.

It is an amenable number.

1442625081 is a deficient number, since it is larger than the sum of its proper divisors (481210119).

1442625081 is an equidigital number, since it uses as much as digits as its factorization.

1442625081 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 83775.

The product of its (nonzero) digits is 15360, while the sum is 33.

The square root of 1442625081 is about 37981.9046520840. The cubic root of 1442625081 is about 1129.9290113861.

The spelling of 1442625081 in words is "one billion, four hundred forty-two million, six hundred twenty-five thousand, eighty-one".