1442140 has 24 divisors (see below), whose sum is σ = 3461472. Its totient is φ = 494400.

The previous prime is 1442087. The next prime is 1442143. The reversal of 1442140 is 412441.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1442143) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5011 + ... + 5290.

It is an arithmetic number, because the mean of its divisors is an integer number (144228).

2^1442140 is an apocalyptic number.

1442140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1442140 is an abundant number, since it is smaller than the sum of its proper divisors (2019332).

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

1442140 is a wasteful number, since it uses less digits than its factorization.

1442140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10317 (or 10315 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 16.

The square root of 1442140 is about 1200.8913356337. The cubic root of 1442140 is about 112.9802351418.

Adding to 1442140 its reverse (412441), we get a palindrome (1854581).

The spelling of 1442140 in words is "one million, four hundred forty-two thousand, one hundred forty".