1442987271 has 32 divisors (see below), whose sum is σ = 2433507840. Its totient is φ = 836510400.

The previous prime is 1442987263. The next prime is 1442987321. The reversal of 1442987271 is 1727892441.

It is not a de Polignac number, because 1442987271 - 2³ = 1442987263 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1442987201) 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 31 ways as a sum of consecutive naturals, for example, 98790 + ... + 112451.

It is an arithmetic number, because the mean of its divisors is an integer number (76047120).

Almost surely, 2^1442987271 is an apocalyptic number.

1442987271 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

1442987271 is a deficient number, since it is larger than the sum of its proper divisors (990520569).

1442987271 is a wasteful number, since it uses less digits than its factorization.

1442987271 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 211284 (or 211278 counting only the distinct ones).

The product of its digits is 225792, while the sum is 45.

The square root of 1442987271 is about 37986.6722812094. The cubic root of 1442987271 is about 1130.0235646533.

The spelling of 1442987271 in words is "one billion, four hundred forty-two million, nine hundred eighty-seven thousand, two hundred seventy-one".