1420515143 has 4 divisors (see below), whose sum is σ = 1420649040. Its totient is φ = 1420381248.

The previous prime is 1420515101. The next prime is 1420515163. The reversal of 1420515143 is 3415150241.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1420515143 - 2¹⁴ = 1420498759 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1420515163) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 49523 + ... + 72756.

It is an arithmetic number, because the mean of its divisors is an integer number (355162260).

Almost surely, 2^1420515143 is an apocalyptic number.

1420515143 is a deficient number, since it is larger than the sum of its proper divisors (133897).

1420515143 is a wasteful number, since it uses less digits than its factorization.

1420515143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 133896.

The product of its (nonzero) digits is 2400, while the sum is 26.

The square root of 1420515143 is about 37689.7219809327. The cubic root of 1420515143 is about 1124.1267674363.

Adding to 1420515143 its reverse (3415150241), we get a palindrome (4835665384).

The spelling of 1420515143 in words is "one billion, four hundred twenty million, five hundred fifteen thousand, one hundred forty-three".