1520143 has 2 divisors, whose sum is σ = 1520144. Its totient is φ = 1520142.

The previous prime is 1520131. The next prime is 1520153. The reversal of 1520143 is 3410251.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1520143 - 2⁹ = 1519631 is a prime.

1520143 is a lucky number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1520153) 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, 760071 + 760072.

It is an arithmetic number, because the mean of its divisors is an integer number (760072).

2^1520143 is an apocalyptic number.

1520143 is a deficient number, since it is larger than the sum of its proper divisors (1).

1520143 is an equidigital number, since it uses as much as digits as its factorization.

1520143 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 120, while the sum is 16.

The square root of 1520143 is about 1232.9407933879. The cubic root of 1520143 is about 114.9815471337.

Adding to 1520143 its reverse (3410251), we get a palindrome (4930394).

The spelling of 1520143 in words is "one million, five hundred twenty thousand, one hundred forty-three".