1440402122 has 16 divisors (see below), whose sum is σ = 2278152000. Its totient is φ = 681145920.

The previous prime is 1440402121. The next prime is 1440402133. The reversal of 1440402122 is 2212040441.

It is a junction number, because it is equal to n+sod(n) for n = 1440402094 and 1440402103.

It is not an unprimeable number, because it can be changed into a prime (1440402121) 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 7 ways as a sum of consecutive naturals, for example, 8879 + ... + 54402.

It is an arithmetic number, because the mean of its divisors is an integer number (142384500).

Almost surely, 2^1440402122 is an apocalyptic number.

1440402122 is a deficient number, since it is larger than the sum of its proper divisors (837749878).

1440402122 is a wasteful number, since it uses less digits than its factorization.

1440402122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63901.

The product of its (nonzero) digits is 512, while the sum is 20.

The square root of 1440402122 is about 37952.6299747462. The cubic root of 1440402122 is about 1129.3483391215.

Adding to 1440402122 its reverse (2212040441), we get a palindrome (3652442563).

The spelling of 1440402122 in words is "one billion, four hundred forty million, four hundred two thousand, one hundred twenty-two".