1021421441 has 16 divisors (see below), whose sum is σ = 1084776000. Its totient is φ = 960095808.

The previous prime is 1021421419. The next prime is 1021421483. The reversal of 1021421441 is 1441241201.

1021421441 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 1021421441 - 2¹⁸ = 1021159297 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1021421411) 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, 434030 + ... + 436376.

It is an arithmetic number, because the mean of its divisors is an integer number (67798500).

Almost surely, 2^1021421441 is an apocalyptic number.

It is an amenable number.

1021421441 is a deficient number, since it is larger than the sum of its proper divisors (63354559).

1021421441 is a wasteful number, since it uses less digits than its factorization.

1021421441 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2768.

The product of its (nonzero) digits is 256, while the sum is 20.

The square root of 1021421441 is about 31959.6846198457. The cubic root of 1021421441 is about 1007.0900921221.

Adding to 1021421441 its reverse (1441241201), we get a palindrome (2462662642).

The spelling of 1021421441 in words is "one billion, twenty-one million, four hundred twenty-one thousand, four hundred forty-one".