1420040 has 32 divisors (see below), whose sum is σ = 3231360. Its totient is φ = 561600.

The previous prime is 1420039. The next prime is 1420057. The reversal of 1420040 is 400241.

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, 5105 + ... + 5375.

It is an arithmetic number, because the mean of its divisors is an integer number (100980).

2^1420040 is an apocalyptic number.

1420040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1420040 is an abundant number, since it is smaller than the sum of its proper divisors (1811320).

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

1420040 is a wasteful number, since it uses less digits than its factorization.

1420040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 413 (or 409 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 11.

The square root of 1420040 is about 1191.6543122903. The cubic root of 1420040 is about 112.4001418420.

Adding to 1420040 its reverse (400241), we get a palindrome (1820281).

The spelling of 1420040 in words is "one million, four hundred twenty thousand, forty".