124420524531551 has 4 divisors (see below), whose sum is σ = 124523097100392. Its totient is φ = 124317951962712.

The previous prime is 124420524531529. The next prime is 124420524531559. The reversal of 124420524531551 is 155135425024421.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 124420524531551 - 2¹⁸ = 124420524269407 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (124420524531559) 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, 51286282601 + ... + 51286285026.

It is an arithmetic number, because the mean of its divisors is an integer number (31130774275098).

Almost surely, 2^{124420524531551} is an apocalyptic number.

124420524531551 is a deficient number, since it is larger than the sum of its proper divisors (102572568841).

124420524531551 is a wasteful number, since it uses less digits than its factorization.

124420524531551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 102572568840.

The product of its (nonzero) digits is 960000, while the sum is 44.

Adding to 124420524531551 its reverse (155135425024421), we get a palindrome (279555949555972).

The spelling of 124420524531551 in words is "one hundred twenty-four trillion, four hundred twenty billion, five hundred twenty-four million, five hundred thirty-one thousand, five hundred fifty-one".