1002039026 has 16 divisors (see below), whose sum is σ = 1537157304. Its totient is φ = 489775104.

The previous prime is 1002038969. The next prime is 1002039029. The reversal of 1002039026 is 6209302001.

It is a Cunningham number, because it is equal to 31655²+1.

It can be written as a sum of positive squares in 4 ways, for example, as 697012801 + 305026225 = 26401^2 + 17465^2 .

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 1002038992 and 1002039010.

It is not an unprimeable number, because it can be changed into a prime (1002039029) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13871 + ... + 46866.

Almost surely, 2^1002039026 is an apocalyptic number.

1002039026 is a deficient number, since it is larger than the sum of its proper divisors (535118278).

1002039026 is a wasteful number, since it uses less digits than its factorization.

1002039026 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60925.

The product of its (nonzero) digits is 648, while the sum is 23.

The square root of 1002039026 is about 31655.0000157953. Note that the first 4 decimals coincide. The cubic root of 1002039026 is about 1000.6792138974.

The spelling of 1002039026 in words is "one billion, two million, thirty-nine thousand, twenty-six".