1002402143 has 4 divisors (see below), whose sum is σ = 1034737728. Its totient is φ = 970066560.

The previous prime is 1002402109. The next prime is 1002402151. The reversal of 1002402143 is 3412042001.

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 1002402143 - 2⁸ = 1002401887 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 (1002407143) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16167746 + ... + 16167807.

It is an arithmetic number, because the mean of its divisors is an integer number (258684432).

Almost surely, 2^1002402143 is an apocalyptic number.

1002402143 is a deficient number, since it is larger than the sum of its proper divisors (32335585).

1002402143 is an equidigital number, since it uses as much as digits as its factorization.

1002402143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32335584.

The product of its (nonzero) digits is 192, while the sum is 17.

The square root of 1002402143 is about 31660.7350356873. The cubic root of 1002402143 is about 1000.8000740441.

Adding to 1002402143 its reverse (3412042001), we get a palindrome (4414444144).

The spelling of 1002402143 in words is "one billion, two million, four hundred two thousand, one hundred forty-three".