1404123428 has 12 divisors (see below), whose sum is σ = 2470793052. Its totient is φ = 698182560.

The previous prime is 1404123401. The next prime is 1404123431. The reversal of 1404123428 is 8243214041.

It can be written as a sum of positive squares in 2 ways, for example, as 503643364 + 900480064 = 22442^2 + 30008^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 1404123428.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 968975 + ... + 970422.

It is an arithmetic number, because the mean of its divisors is an integer number (205899421).

Almost surely, 2^1404123428 is an apocalyptic number.

It is an amenable number.

1404123428 is a deficient number, since it is larger than the sum of its proper divisors (1066669624).

1404123428 is a wasteful number, since it uses less digits than its factorization.

1404123428 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1939582 (or 1939580 counting only the distinct ones).

The product of its (nonzero) digits is 6144, while the sum is 29.

The square root of 1404123428 is about 37471.6349790078. The cubic root of 1404123428 is about 1119.7861592167.

Adding to 1404123428 its reverse (8243214041), we get a palindrome (9647337469).

The spelling of 1404123428 in words is "one billion, four hundred four million, one hundred twenty-three thousand, four hundred twenty-eight".