105454312421 has 2 divisors, whose sum is σ = 105454312422. Its totient is φ = 105454312420.

The previous prime is 105454312417. The next prime is 105454312489. The reversal of 105454312421 is 124213454501.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 104571390625 + 882921796 = 323375^2 + 29714^2 .

It is a cyclic number.

It is not a de Polignac number, because 105454312421 - 2² = 105454312417 is a prime.

It is a super-2 number, since 2×105454312421² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (105454314421) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 52727156210 + 52727156211.

It is an arithmetic number, because the mean of its divisors is an integer number (52727156211).

Almost surely, 2^105454312421 is an apocalyptic number.

It is an amenable number.

105454312421 is a deficient number, since it is larger than the sum of its proper divisors (1).

105454312421 is an equidigital number, since it uses as much as digits as its factorization.

105454312421 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 19200, while the sum is 32.

Adding to 105454312421 its reverse (124213454501), we get a palindrome (229667766922).

The spelling of 105454312421 in words is "one hundred five billion, four hundred fifty-four million, three hundred twelve thousand, four hundred twenty-one".