1237842 has 32 divisors (see below), whose sum is σ = 2794560. Its totient is φ = 411156.

The previous prime is 1237829. The next prime is 1237843. The reversal of 1237842 is 2487321.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a plaindrome in base 13.

It is not an unprimeable number, because it can be changed into a prime (1237843) 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, 4233 + ... + 4515.

It is an arithmetic number, because the mean of its divisors is an integer number (87330).

2^1237842 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1237842, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1397280).

1237842 is an abundant number, since it is smaller than the sum of its proper divisors (1556718).

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

1237842 is an frugal number, since it uses more digits than its factorization.

1237842 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 306 (or 288 counting only the distinct ones).

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

The square root of 1237842 is about 1112.5834800140. The cubic root of 1237842 is about 107.3713478077.

The spelling of 1237842 in words is "one million, two hundred thirty-seven thousand, eight hundred forty-two".