1442405431 has 4 divisors (see below), whose sum is σ = 1443989664. Its totient is φ = 1440821200.

The previous prime is 1442405429. The next prime is 1442405453. The reversal of 1442405431 is 1345042441.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1345042441 = 347 ⋅3876203.

It is a cyclic number.

It is not a de Polignac number, because 1442405431 - 2¹ = 1442405429 is a prime.

It is a super-2 number, since 2×1442405431² = 4161066854756591522, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1442405431.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1442402431) 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 3 ways as a sum of consecutive naturals, for example, 790750 + ... + 792571.

It is an arithmetic number, because the mean of its divisors is an integer number (360997416).

Almost surely, 2^1442405431 is an apocalyptic number.

1442405431 is a deficient number, since it is larger than the sum of its proper divisors (1584233).

1442405431 is an equidigital number, since it uses as much as digits as its factorization.

1442405431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1584232.

The product of its (nonzero) digits is 7680, while the sum is 28.

The square root of 1442405431 is about 37979.0130335163. The cubic root of 1442405431 is about 1129.8716618807.

Adding to 1442405431 its reverse (1345042441), we get a palindrome (2787447872).

The spelling of 1442405431 in words is "one billion, four hundred forty-two million, four hundred five thousand, four hundred thirty-one".