1442740 has 48 divisors (see below), whose sum is σ = 3386880. Its totient is φ = 512640.

The previous prime is 1442731. The next prime is 1442743. The reversal of 1442740 is 472441.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1442743) 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, 7971 + ... + 8149.

It is an arithmetic number, because the mean of its divisors is an integer number (70560).

2^1442740 is an apocalyptic number.

1442740 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 1442740, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1693440).

1442740 is an abundant number, since it is smaller than the sum of its proper divisors (1944140).

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

1442740 is a wasteful number, since it uses less digits than its factorization.

1442740 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 232 (or 230 counting only the distinct ones).

The product of its (nonzero) digits is 896, while the sum is 22.

The square root of 1442740 is about 1201.1411240982. The cubic root of 1442740 is about 112.9959013837.

Subtracting from 1442740 its reverse (472441), we obtain a cube (970299 = 99³).

The spelling of 1442740 in words is "one million, four hundred forty-two thousand, seven hundred forty".