102121441 has 8 divisors (see below), whose sum is σ = 105777000. Its totient is φ = 98474880.

The previous prime is 102121421. The next prime is 102121463. The reversal of 102121441 is 144121201.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 817216 + 101304225 = 904^2 + 10065^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 102121441 - 2⁹ = 102120929 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (102121421) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 27885 + ... + 31333.

It is an arithmetic number, because the mean of its divisors is an integer number (13222125).

Almost surely, 2^102121441 is an apocalyptic number.

It is an amenable number.

102121441 is a deficient number, since it is larger than the sum of its proper divisors (3655559).

102121441 is a wasteful number, since it uses less digits than its factorization.

102121441 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4499.

The product of its (nonzero) digits is 64, while the sum is 16.

The square root of 102121441 is about 10105.5153752790. The cubic root of 102121441 is about 467.4182281412.

Adding to 102121441 its reverse (144121201), we get a palindrome (246242642).

The spelling of 102121441 in words is "one hundred two million, one hundred twenty-one thousand, four hundred forty-one".