1420393 has 8 divisors (see below), whose sum is σ = 1571528. Its totient is φ = 1275264.

The previous prime is 1420373. The next prime is 1420399. The reversal of 1420393 is 3930241.

It can be written as a sum of positive squares in 4 ways, for example, as 446224 + 974169 = 668^2 + 987^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1420393 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1420399) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 996 + ... + 1957.

It is an arithmetic number, because the mean of its divisors is an integer number (196441).

2^1420393 is an apocalyptic number.

1420393 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

1420393 is a deficient number, since it is larger than the sum of its proper divisors (151135).

1420393 is a wasteful number, since it uses less digits than its factorization.

1420393 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3003.

The product of its (nonzero) digits is 648, while the sum is 22.

The square root of 1420393 is about 1191.8024165104. The cubic root of 1420393 is about 112.4094547165.

The spelling of 1420393 in words is "one million, four hundred twenty thousand, three hundred ninety-three".