104001132421 has 2 divisors, whose sum is σ = 104001132422. Its totient is φ = 104001132420.

The previous prime is 104001132379. The next prime is 104001132437. The reversal of 104001132421 is 124231100401.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 57558727396 + 46442405025 = 239914^2 + 215505^2 .

It is a cyclic number.

It is not a de Polignac number, because 104001132421 - 2²⁷ = 103866914693 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (104001132461) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 52000566210 + 52000566211.

It is an arithmetic number, because the mean of its divisors is an integer number (52000566211).

Almost surely, 2^104001132421 is an apocalyptic number.

It is an amenable number.

104001132421 is a deficient number, since it is larger than the sum of its proper divisors (1).

104001132421 is an equidigital number, since it uses as much as digits as its factorization.

104001132421 is an evil number, because the sum of its binary digits is even.

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

Adding to 104001132421 its reverse (124231100401), we get a palindrome (228232232822).

The spelling of 104001132421 in words is "one hundred four billion, one million, one hundred thirty-two thousand, four hundred twenty-one".