124540140221 has 8 divisors (see below), whose sum is σ = 144455941440. Its totient is φ = 105155427168.

The previous prime is 124540140103. The next prime is 124540140227. The reversal of 124540140221 is 122041045421.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 124540140221 - 2²² = 124535945917 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (124540140227) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 132771536 + ... + 132772473.

It is an arithmetic number, because the mean of its divisors is an integer number (18056992680).

Almost surely, 2^124540140221 is an apocalyptic number.

It is an amenable number.

124540140221 is a deficient number, since it is larger than the sum of its proper divisors (19915801219).

124540140221 is an equidigital number, since it uses as much as digits as its factorization.

124540140221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 265544083.

The product of its (nonzero) digits is 2560, while the sum is 26.

Adding to 124540140221 its reverse (122041045421), we get a palindrome (246581185642).

The spelling of 124540140221 in words is "one hundred twenty-four billion, five hundred forty million, one hundred forty thousand, two hundred twenty-one".