1263034542 has 96 divisors (see below), whose sum is σ = 3195472896. Its totient is φ = 325765440.

The previous prime is 1263034529. The next prime is 1263034607. The reversal of 1263034542 is 2454303621.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 797083 + ... + 798665.

It is an arithmetic number, because the mean of its divisors is an integer number (33286176).

Almost surely, 2^1263034542 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1263034542, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1597736448).

1263034542 is an abundant number, since it is smaller than the sum of its proper divisors (1932438354).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1263034542 is a wasteful number, since it uses less digits than its factorization.

1263034542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1774 (or 1763 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 30.

The square root of 1263034542 is about 35539.1972616152. The cubic root of 1263034542 is about 1080.9486811726.

The spelling of 1263034542 in words is "one billion, two hundred sixty-three million, thirty-four thousand, five hundred forty-two".