124321444123421 has 2 divisors, whose sum is σ = 124321444123422. Its totient is φ = 124321444123420.

The previous prime is 124321444123411. The next prime is 124321444123433.

124321444123421 is nontrivially palindromic in base 10.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 116914805671225 + 7406638452196 = 10812715^2 + 2721514^2 .

It is a palprime.

It is a cyclic number.

It is not a de Polignac number, because 124321444123421 - 2³⁸ = 124046566216477 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (124321444123411) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 62160722061710 + 62160722061711.

It is an arithmetic number, because the mean of its divisors is an integer number (62160722061711).

Almost surely, 2^{124321444123421} is an apocalyptic number.

It is an amenable number.

124321444123421 is a deficient number, since it is larger than the sum of its proper divisors (1).

124321444123421 is an equidigital number, since it uses as much as digits as its factorization.

124321444123421 is an evil number, because the sum of its binary digits is even.

The product of its digits is 147456, while the sum is 38.

The spelling of 124321444123421 in words is "one hundred twenty-four trillion, three hundred twenty-one billion, four hundred forty-four million, one hundred twenty-three thousand, four hundred twenty-one".