1238742 has 12 divisors (see below), whose sum is σ = 2683980. Its totient is φ = 412908.

The previous prime is 1238719. The next prime is 1238747. The reversal of 1238742 is 2478321.

It is a plaindrome in base 13.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1238747) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 34392 + ... + 34427.

It is an arithmetic number, because the mean of its divisors is an integer number (223665).

2^1238742 is an apocalyptic number.

1238742 is an abundant number, since it is smaller than the sum of its proper divisors (1445238).

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

1238742 is a wasteful number, since it uses less digits than its factorization.

1238742 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68827 (or 68824 counting only the distinct ones).

The product of its digits is 2688, while the sum is 27.

The square root of 1238742 is about 1112.9878705539. The cubic root of 1238742 is about 107.3973637296.

Adding to 1238742 its sum of digits (27), we get a square (1238769 = 1113²).

The spelling of 1238742 in words is "one million, two hundred thirty-eight thousand, seven hundred forty-two".