1263942 has 48 divisors (see below), whose sum is σ = 2965248. Its totient is φ = 388080.

The previous prime is 1263931. The next prime is 1263943. The reversal of 1263942 is 2493621.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1263943) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 17767 + ... + 17837.

It is an arithmetic number, because the mean of its divisors is an integer number (61776).

2^1263942 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1263942, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1482624).

1263942 is an abundant number, since it is smaller than the sum of its proper divisors (1701306).

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

1263942 is a wasteful number, since it uses less digits than its factorization.

1263942 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 145 (or 142 counting only the distinct ones).

The product of its digits is 2592, while the sum is 27.

The square root of 1263942 is about 1124.2517511661. The cubic root of 1263942 is about 108.1207497188.

The spelling of 1263942 in words is "one million, two hundred sixty-three thousand, nine hundred forty-two".