1442340 has 48 divisors (see below), whose sum is σ = 4488960. Its totient is φ = 384480.

The previous prime is 1442333. The next prime is 1442341. The reversal of 1442340 is 432441.

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 (1442341) 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, 796 + ... + 1875.

It is an arithmetic number, because the mean of its divisors is an integer number (93520).

2^1442340 is an apocalyptic number.

1442340 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1442340 is an abundant number, since it is smaller than the sum of its proper divisors (3046620).

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

1442340 is a wasteful number, since it uses less digits than its factorization.

1442340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2689 (or 2681 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 18.

The square root of 1442340 is about 1200.9746042277. The cubic root of 1442340 is about 112.9854577052.

Adding to 1442340 its reverse (432441), we get a palindrome (1874781).

The spelling of 1442340 in words is "one million, four hundred forty-two thousand, three hundred forty".