1421140 has 24 divisors (see below), whose sum is σ = 3411072. Its totient is φ = 487200.

The previous prime is 1421113. The next prime is 1421141. The reversal of 1421140 is 411241.

It is a self number, because there is not a number n which added to its sum of digits gives 1421140.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1421141) 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, 4936 + ... + 5215.

It is an arithmetic number, because the mean of its divisors is an integer number (142128).

2^1421140 is an apocalyptic number.

1421140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1421140 is an abundant number, since it is smaller than the sum of its proper divisors (1989932).

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

1421140 is a wasteful number, since it uses less digits than its factorization.

1421140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10167 (or 10165 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 13.

The square root of 1421140 is about 1192.1157661905. The cubic root of 1421140 is about 112.4291570446.

Adding to 1421140 its reverse (411241), we get a palindrome (1832381).

The spelling of 1421140 in words is "one million, four hundred twenty-one thousand, one hundred forty".