1405140442 has 16 divisors (see below), whose sum is σ = 2122785792. Its totient is φ = 697562560.

The previous prime is 1405140437. The next prime is 1405140461. The reversal of 1405140442 is 2440415041.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 169842 + ... + 177922.

It is an arithmetic number, because the mean of its divisors is an integer number (132674112).

Almost surely, 2^1405140442 is an apocalyptic number.

1405140442 is a deficient number, since it is larger than the sum of its proper divisors (717645350).

1405140442 is a wasteful number, since it uses less digits than its factorization.

1405140442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8693.

The product of its (nonzero) digits is 2560, while the sum is 25.

The square root of 1405140442 is about 37485.2029739736. The cubic root of 1405140442 is about 1120.0564496421.

Adding to 1405140442 its reverse (2440415041), we get a palindrome (3845555483).

The spelling of 1405140442 in words is "one billion, four hundred five million, one hundred forty thousand, four hundred forty-two".