1002406143 has 16 divisors (see below), whose sum is σ = 1357052256. Its totient is φ = 658045440.

The previous prime is 1002406117. The next prime is 1002406159. The reversal of 1002406143 is 3416042001.

It is not a de Polignac number, because 1002406143 - 2¹² = 1002402047 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1002406843) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 144883 + ... + 151643.

It is an arithmetic number, because the mean of its divisors is an integer number (84815766).

Almost surely, 2^1002406143 is an apocalyptic number.

1002406143 is a deficient number, since it is larger than the sum of its proper divisors (354646113).

1002406143 is an equidigital number, since it uses as much as digits as its factorization.

1002406143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7514.

The product of its (nonzero) digits is 576, while the sum is 21.

The square root of 1002406143 is about 31660.7982053517. The cubic root of 1002406143 is about 1000.8014052447.

Adding to 1002406143 its reverse (3416042001), we get a palindrome (4418448144).

The spelling of 1002406143 in words is "one billion, two million, four hundred six thousand, one hundred forty-three".