4030422021 has 6 divisors (see below), whose sum is σ = 5821720710. Its totient is φ = 2686948008.

The previous prime is 4030422017. The next prime is 4030422031. The reversal of 4030422021 is 1202240304.

It can be written as a sum of positive squares in only one way, i.e., 3950122500 + 80299521 = 62850^2 + 8961^2 .

It is not a de Polignac number, because 4030422021 - 2² = 4030422017 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 4030421985 and 4030422003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4030422031) 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, 223912326 + ... + 223912343.

It is an arithmetic number, because the mean of its divisors is an integer number (970286785).

Almost surely, 2^4030422021 is an apocalyptic number.

It is an amenable number.

4030422021 is a deficient number, since it is larger than the sum of its proper divisors (1791298689).

4030422021 is a wasteful number, since it uses less digits than its factorization.

4030422021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 447824675 (or 447824672 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 18.

The square root of 4030422021 is about 63485.6048329068. The cubic root of 4030422021 is about 1591.4152215184.

Adding to 4030422021 its reverse (1202240304), we get a palindrome (5232662325).

The spelling of 4030422021 in words is "four billion, thirty million, four hundred twenty-two thousand, twenty-one".