1451340 has 72 divisors (see below), whose sum is σ = 4809168. Its totient is φ = 351360.

The previous prime is 1451339. The next prime is 1451347. The reversal of 1451340 is 431541.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (1451347) 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, 1614 + ... + 2346.

It is an arithmetic number, because the mean of its divisors is an integer number (66794).

2^1451340 is an apocalyptic number.

1451340 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 1451340, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2404584).

1451340 is an abundant number, since it is smaller than the sum of its proper divisors (3357828).

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

1451340 is a wasteful number, since it uses less digits than its factorization.

1451340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 759 (or 754 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 18.

The square root of 1451340 is about 1204.7157341049. The cubic root of 1451340 is about 113.2199750822.

Adding to 1451340 its reverse (431541), we get a palindrome (1882881).

It can be divided in two parts, 145 and 1340, that added together give a triangular number (1485 = T₅₄).

The spelling of 1451340 in words is "one million, four hundred fifty-one thousand, three hundred forty".