4121031421 has 16 divisors (see below), whose sum is σ = 4730670000. Its totient is φ = 3556205568.

The previous prime is 4121031419. The next prime is 4121031479. The reversal of 4121031421 is 1241301214.

It can be written as a sum of positive squares in 8 ways, for example, as 423783396 + 3697248025 = 20586^2 + 60805^2 .

It is a cyclic number.

It is not a de Polignac number, because 4121031421 - 2¹ = 4121031419 is a prime.

It is a super-3 number, since 3×4121031421³ (a number of 30 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4121031521) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 29646 + ... + 95503.

It is an arithmetic number, because the mean of its divisors is an integer number (295666875).

Almost surely, 2^4121031421 is an apocalyptic number.

It is an amenable number.

4121031421 is a deficient number, since it is larger than the sum of its proper divisors (609638579).

4121031421 is a wasteful number, since it uses less digits than its factorization.

4121031421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 125328.

The product of its (nonzero) digits is 192, while the sum is 19.

The square root of 4121031421 is about 64195.2601131890. The cubic root of 4121031421 is about 1603.2526826632.

Adding to 4121031421 its reverse (1241301214), we get a palindrome (5362332635).

The spelling of 4121031421 in words is "four billion, one hundred twenty-one million, thirty-one thousand, four hundred twenty-one".