1263542404 has 6 divisors (see below), whose sum is σ = 2211199214. Its totient is φ = 631771200.

The previous prime is 1263542393. The next prime is 1263542429. The reversal of 1263542404 is 4042453621.

It can be written as a sum of positive squares in only one way, i.e., 861539904 + 402002500 = 29352^2 + 20050^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 157942797 + ... + 157942804.

Almost surely, 2^1263542404 is an apocalyptic number.

It is an amenable number.

1263542404 is a deficient number, since it is larger than the sum of its proper divisors (947656810).

1263542404 is a wasteful number, since it uses less digits than its factorization.

1263542404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 315885605 (or 315885603 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 31.

The square root of 1263542404 is about 35546.3416401744. The cubic root of 1263542404 is about 1081.0935437179.

The spelling of 1263542404 in words is "one billion, two hundred sixty-three million, five hundred forty-two thousand, four hundred four".