4021021400 has 48 divisors (see below), whose sum is σ = 10198778040. Its totient is φ = 1462188800.

The previous prime is 4021021397. The next prime is 4021021427. The reversal of 4021021400 is 41201204.

It is a super-2 number, since 2×4021021400² = 32337226198515920000, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 911669 + ... + 916068.

Almost surely, 2^4021021400 is an apocalyptic number.

4021021400 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

4021021400 is an abundant number, since it is smaller than the sum of its proper divisors (6177756640).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

4021021400 is a wasteful number, since it uses less digits than its factorization.

4021021400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1827764 (or 1827755 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 14.

The square root of 4021021400 is about 63411.5241892197. The cubic root of 4021021400 is about 1590.1769775184.

Adding to 4021021400 its reverse (41201204), we get a palindrome (4062222604).

The spelling of 4021021400 in words is "four billion, twenty-one million, twenty-one thousand, four hundred".