124420025533 has 4 divisors (see below), whose sum is σ = 124420732380. Its totient is φ = 124419318688.

The previous prime is 124420025519. The next prime is 124420025573. The reversal of 124420025533 is 335520024421.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 51764440324 + 72655585209 = 227518^2 + 269547^2 .

It is a cyclic number.

It is not a de Polignac number, because 124420025533 - 2⁵ = 124420025501 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 124420025495 and 124420025504.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (124420025573) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 143583 + ... + 519091.

It is an arithmetic number, because the mean of its divisors is an integer number (31105183095).

Almost surely, 2^124420025533 is an apocalyptic number.

It is an amenable number.

124420025533 is a deficient number, since it is larger than the sum of its proper divisors (706847).

124420025533 is an equidigital number, since it uses as much as digits as its factorization.

124420025533 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 706846.

The product of its (nonzero) digits is 28800, while the sum is 31.

Adding to 124420025533 its reverse (335520024421), we get a palindrome (459940049954).

The spelling of 124420025533 in words is "one hundred twenty-four billion, four hundred twenty million, twenty-five thousand, five hundred thirty-three".