1263406252 has 6 divisors (see below), whose sum is σ = 2210960948. Its totient is φ = 631703124.

The previous prime is 1263406237. The next prime is 1263406301. The reversal of 1263406252 is 2526043621.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 157925778 + ... + 157925785.

Almost surely, 2^1263406252 is an apocalyptic number.

It is an amenable number.

1263406252 is a deficient number, since it is larger than the sum of its proper divisors (947554696).

1263406252 is a wasteful number, since it uses less digits than its factorization.

1263406252 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 315851567 (or 315851565 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 31.

The square root of 1263406252 is about 35544.4264547903. The cubic root of 1263406252 is about 1081.0547115334.

Adding to 1263406252 its reverse (2526043621), we get a palindrome (3789449873).

The spelling of 1263406252 in words is "one billion, two hundred sixty-three million, four hundred six thousand, two hundred fifty-two".