1243200404 has 6 divisors (see below), whose sum is σ = 2175600714. Its totient is φ = 621600200.

The previous prime is 1243200397. The next prime is 1243200443. The reversal of 1243200404 is 4040023421.

It can be written as a sum of positive squares in only one way, i.e., 640596100 + 602604304 = 25310^2 + 24548^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 155400047 + ... + 155400054.

It is an arithmetic number, because the mean of its divisors is an integer number (362600119).

Almost surely, 2^1243200404 is an apocalyptic number.

It is an amenable number.

1243200404 is a deficient number, since it is larger than the sum of its proper divisors (932400310).

1243200404 is a wasteful number, since it uses less digits than its factorization.

1243200404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 310800105 (or 310800103 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 20.

The square root of 1243200404 is about 35259.0471226890. The cubic root of 1243200404 is about 1075.2605545459.

Adding to 1243200404 its reverse (4040023421), we get a palindrome (5283223825).

The spelling of 1243200404 in words is "one billion, two hundred forty-three million, two hundred thousand, four hundred four".