1420140 has 24 divisors (see below), whose sum is σ = 3976560. Its totient is φ = 378688.

The previous prime is 1420123. The next prime is 1420151. The reversal of 1420140 is 410241.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a zygodrome in base 11.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11775 + ... + 11894.

It is an arithmetic number, because the mean of its divisors is an integer number (165690).

2^1420140 is an apocalyptic number.

1420140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1420140 is an abundant number, since it is smaller than the sum of its proper divisors (2556420).

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

1420140 is a wasteful number, since it uses less digits than its factorization.

1420140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23681 (or 23679 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 12.

The square root of 1420140 is about 1191.6962700286. The cubic root of 1420140 is about 112.4027802067.

Adding to 1420140 its reverse (410241), we get a palindrome (1830381).

It can be divided in two parts, 14201 and 40, that added together give a palindrome (14241).

The spelling of 1420140 in words is "one million, four hundred twenty thousand, one hundred forty".