4002402026 has 12 divisors (see below), whose sum is σ = 6983783298. Its totient is φ = 1715315112.

The previous prime is 4002402023. The next prime is 4002402121. The reversal of 4002402026 is 6202042004.

It can be written as a sum of positive squares in only one way, i.e., 2329510225 + 1672891801 = 48265^2 + 40901^2 .

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 4002401989 and 4002402007.

It is not an unprimeable number, because it can be changed into a prime (4002402023) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 20420321 + ... + 20420516.

Almost surely, 2^4002402026 is an apocalyptic number.

4002402026 is a deficient number, since it is larger than the sum of its proper divisors (2981381272).

4002402026 is a wasteful number, since it uses less digits than its factorization.

4002402026 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40840853 (or 40840846 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 20.

The square root of 4002402026 is about 63264.5400362636. The cubic root of 4002402026 is about 1587.7187366027.

The spelling of 4002402026 in words is "four billion, two million, four hundred two thousand, twenty-six".