1404100042 has 4 divisors (see below), whose sum is σ = 2106150066. Its totient is φ = 702050020.

The previous prime is 1404099973. The next prime is 1404100109. The reversal of 1404100042 is 2400014041.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 770118001 + 633982041 = 27751^2 + 25179^2 .

It is a junction number, because it is equal to n+sod(n) for n = 1404099989 and 1404100025.

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 as a sum of consecutive naturals, namely, 351025009 + ... + 351025012.

Almost surely, 2^1404100042 is an apocalyptic number.

1404100042 is a deficient number, since it is larger than the sum of its proper divisors (702050024).

1404100042 is an equidigital number, since it uses as much as digits as its factorization.

1404100042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 702050023.

The product of its (nonzero) digits is 128, while the sum is 16.

The square root of 1404100042 is about 37471.3229283408. The cubic root of 1404100042 is about 1119.7799424164.

Adding to 1404100042 its reverse (2400014041), we get a palindrome (3804114083).

The spelling of 1404100042 in words is "one billion, four hundred four million, one hundred thousand, forty-two".