1420633 has 2 divisors, whose sum is σ = 1420634. Its totient is φ = 1420632.

The previous prime is 1420631. The next prime is 1420651. The reversal of 1420633 is 3360241.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1408969 + 11664 = 1187^2 + 108^2 .

It is a cyclic number.

It is not a de Polignac number, because 1420633 - 2¹ = 1420631 is a prime.

Together with 1420631, it forms a pair of twin primes.

It is equal to p₁₀₈₅₃₂ and since 1420633 and 108532 have the same sum of digits, it is a Honaker prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1420633.

It is not a weakly prime, because it can be changed into another prime (1420631) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 710316 + 710317.

It is an arithmetic number, because the mean of its divisors is an integer number (710317).

2^1420633 is an apocalyptic number.

It is an amenable number.

1420633 is a deficient number, since it is larger than the sum of its proper divisors (1).

1420633 is an equidigital number, since it uses as much as digits as its factorization.

1420633 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 432, while the sum is 19.

The square root of 1420633 is about 1191.9031000883. The cubic root of 1420633 is about 112.4157855347.

Adding to 1420633 its reverse (3360241), we get a palindrome (4780874).

The spelling of 1420633 in words is "one million, four hundred twenty thousand, six hundred thirty-three".