1442681431 has 2 divisors, whose sum is σ = 1442681432. Its totient is φ = 1442681430.

The previous prime is 1442681423. The next prime is 1442681479. The reversal of 1442681431 is 1341862441.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1442681431 - 2³ = 1442681423 is a prime.

It is a super-2 number, since 2×1442681431² = 4162659422704415522, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1442681491) 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 as a sum of consecutive naturals, namely, 721340715 + 721340716.

It is an arithmetic number, because the mean of its divisors is an integer number (721340716).

Almost surely, 2^1442681431 is an apocalyptic number.

1442681431 is a deficient number, since it is larger than the sum of its proper divisors (1).

1442681431 is an equidigital number, since it uses as much as digits as its factorization.

1442681431 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 18432, while the sum is 34.

The square root of 1442681431 is about 37982.6464454493. The cubic root of 1442681431 is about 1129.9437231482.

The spelling of 1442681431 in words is "one billion, four hundred forty-two million, six hundred eighty-one thousand, four hundred thirty-one".