1420403 has 2 divisors, whose sum is σ = 1420404. Its totient is φ = 1420402.

The previous prime is 1420399. The next prime is 1420429. The reversal of 1420403 is 3040241.

It is a weak prime.

It is an emirp because it is prime and its reverse (3040241) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1420403 - 2² = 1420399 is a prime.

It is not a weakly prime, because it can be changed into another prime (1420483) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 710201 + 710202.

It is an arithmetic number, because the mean of its divisors is an integer number (710202).

2^1420403 is an apocalyptic number.

1420403 is a deficient number, since it is larger than the sum of its proper divisors (1).

1420403 is an equidigital number, since it uses as much as digits as its factorization.

1420403 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 96, while the sum is 14.

The square root of 1420403 is about 1191.8066118293. The cubic root of 1420403 is about 112.4097185148.

Adding to 1420403 its reverse (3040241), we get a palindrome (4460644).

The spelling of 1420403 in words is "one million, four hundred twenty thousand, four hundred three".