4002023402 has 8 divisors (see below), whose sum is σ = 6464807076. Its totient is φ = 1847087712.

The previous prime is 4002023387. The next prime is 4002023411. The reversal of 4002023402 is 2043202004.

It can be written as a sum of positive squares in 2 ways, for example, as 3664970521 + 337052881 = 60539^2 + 18359^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

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, 76961963 + ... + 76962014.

Almost surely, 2^4002023402 is an apocalyptic number.

4002023402 is a deficient number, since it is larger than the sum of its proper divisors (2462783674).

4002023402 is a wasteful number, since it uses less digits than its factorization.

4002023402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 153923992.

The product of its (nonzero) digits is 384, while the sum is 17.

The square root of 4002023402 is about 63261.5475782880. The cubic root of 4002023402 is about 1587.6686693871.

Adding to 4002023402 its reverse (2043202004), we get a palindrome (6045225406).

The spelling of 4002023402 in words is "four billion, two million, twenty-three thousand, four hundred two".