1401542443 has 6 divisors (see below), whose sum is σ = 1630365756. Its totient is φ = 1201322052.

The previous prime is 1401542437. The next prime is 1401542449. The reversal of 1401542443 is 3442451041.

It is an interprime number because it is at equal distance from previous prime (1401542437) and next prime (1401542449).

It is not a de Polignac number, because 1401542443 - 2²⁹ = 864671531 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1401542449) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 14301405 + ... + 14301502.

It is an arithmetic number, because the mean of its divisors is an integer number (271727626).

Almost surely, 2^1401542443 is an apocalyptic number.

1401542443 is a deficient number, since it is larger than the sum of its proper divisors (228823313).

1401542443 is an equidigital number, since it uses as much as digits as its factorization.

1401542443 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28602921 (or 28602914 counting only the distinct ones).

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

The square root of 1401542443 is about 37437.1799552263. The cubic root of 1401542443 is about 1119.0996279441.

Adding to 1401542443 its reverse (3442451041), we get a palindrome (4843993484).

The spelling of 1401542443 in words is "one billion, four hundred one million, five hundred forty-two thousand, four hundred forty-three".