1263431442 has 32 divisors (see below), whose sum is σ = 3109986432. Its totient is φ = 333212544.

The previous prime is 1263431431. The next prime is 1263431447. The reversal of 1263431442 is 2441343621.

1263431442 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (1263431447) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1156443 + ... + 1157534.

It is an arithmetic number, because the mean of its divisors is an integer number (97187076).

Almost surely, 2^1263431442 is an apocalyptic number.

1263431442 is an abundant number, since it is smaller than the sum of its proper divisors (1846554990).

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

1263431442 is a wasteful number, since it uses less digits than its factorization.

1263431442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2314002.

The product of its digits is 13824, while the sum is 30.

The square root of 1263431442 is about 35544.7807983113. The cubic root of 1263431442 is about 1081.0618962340.

The spelling of 1263431442 in words is "one billion, two hundred sixty-three million, four hundred thirty-one thousand, four hundred forty-two".