1263849142 has 8 divisors (see below), whose sum is σ = 1895964336. Its totient is φ = 631861032.

The previous prime is 1263849133. The next prime is 1263849143. The reversal of 1263849142 is 2419483621.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 1263849095 and 1263849104.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1263849143) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 913 + ... + 50284.

It is an arithmetic number, because the mean of its divisors is an integer number (236995542).

Almost surely, 2^1263849142 is an apocalyptic number.

1263849142 is a deficient number, since it is larger than the sum of its proper divisors (632115194).

1263849142 is a wasteful number, since it uses less digits than its factorization.

1263849142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63542.

The product of its digits is 82944, while the sum is 40.

The square root of 1263849142 is about 35550.6559995733. The cubic root of 1263849142 is about 1081.1810188565.

The spelling of 1263849142 in words is "one billion, two hundred sixty-three million, eight hundred forty-nine thousand, one hundred forty-two".