124013005421 has 2 divisors, whose sum is σ = 124013005422. Its totient is φ = 124013005420.

The previous prime is 124013005411. The next prime is 124013005433. The reversal of 124013005421 is 124500310421.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 120783356521 + 3229648900 = 347539^2 + 56830^2 .

It is a cyclic number.

It is not a de Polignac number, because 124013005421 - 2³⁴ = 106833136237 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (124013005411) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 62006502710 + 62006502711.

It is an arithmetic number, because the mean of its divisors is an integer number (62006502711).

Almost surely, 2^124013005421 is an apocalyptic number.

It is an amenable number.

124013005421 is a deficient number, since it is larger than the sum of its proper divisors (1).

124013005421 is an equidigital number, since it uses as much as digits as its factorization.

124013005421 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 960, while the sum is 23.

Adding to 124013005421 its reverse (124500310421), we get a palindrome (248513315842).

The spelling of 124013005421 in words is "one hundred twenty-four billion, thirteen million, five thousand, four hundred twenty-one".