1351240 has 64 divisors (see below), whose sum is σ = 3447360. Its totient is φ = 472320.

The previous prime is 1351213. The next prime is 1351241. The reversal of 1351240 is 421531.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1351241) 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, 16239 + ... + 16321.

It is an arithmetic number, because the mean of its divisors is an integer number (53865).

2^1351240 is an apocalyptic number.

1351240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1351240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1723680).

1351240 is an abundant number, since it is smaller than the sum of its proper divisors (2096120).

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

1351240 is a wasteful number, since it uses less digits than its factorization.

1351240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 142 (or 138 counting only the distinct ones).

The product of its (nonzero) digits is 120, while the sum is 16.

The square root of 1351240 is about 1162.4284924244. The cubic root of 1351240 is about 110.5547731156.

Adding to 1351240 its reverse (421531), we get a palindrome (1772771).

The spelling of 1351240 in words is "one million, three hundred fifty-one thousand, two hundred forty".