1420057 has 2 divisors, whose sum is σ = 1420058. Its totient is φ = 1420056.

The previous prime is 1420039. The next prime is 1420063. The reversal of 1420057 is 7500241.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1320201 + 99856 = 1149^2 + 316^2 .

It is a cyclic number.

It is not a de Polignac number, because 1420057 - 2¹¹ = 1418009 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1420037) 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 as a sum of consecutive naturals, namely, 710028 + 710029.

It is an arithmetic number, because the mean of its divisors is an integer number (710029).

2^1420057 is an apocalyptic number.

It is an amenable number.

1420057 is a deficient number, since it is larger than the sum of its proper divisors (1).

1420057 is an equidigital number, since it uses as much as digits as its factorization.

1420057 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 280, while the sum is 19.

The square root of 1420057 is about 1191.6614452100. The cubic root of 1420057 is about 112.4005903727.

Adding to 1420057 its reverse (7500241), we get a palindrome (8920298).

The spelling of 1420057 in words is "one million, four hundred twenty thousand, fifty-seven".