124405215345 has 48 divisors (see below), whose sum is σ = 221033855952. Its totient is φ = 64690513920.

The previous prime is 124405215313. The next prime is 124405215391. The reversal of 124405215345 is 543512504421.

124405215345 is a `hidden beast` number, since 1 + 2 + 4 + 40 + 521 + 53 + 45 = 666.

It can be written as a sum of positive squares in 8 ways, for example, as 28502893584 + 95902321761 = 168828^2 + 309681^2 .

It is not a de Polignac number, because 124405215345 - 2⁵ = 124405215313 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 3036819 + ... + 3077511.

It is an arithmetic number, because the mean of its divisors is an integer number (4604871999).

Almost surely, 2^124405215345 is an apocalyptic number.

124405215345 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

124405215345 is a deficient number, since it is larger than the sum of its proper divisors (96628640607).

124405215345 is a wasteful number, since it uses less digits than its factorization.

124405215345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42402 (or 42399 counting only the distinct ones).

The product of its (nonzero) digits is 96000, while the sum is 36.

Adding to 124405215345 its reverse (543512504421), we get a palindrome (667917719766).

The spelling of 124405215345 in words is "one hundred twenty-four billion, four hundred five million, two hundred fifteen thousand, three hundred forty-five".