124542262245421 has 4 divisors (see below), whose sum is σ = 124543352645500. Its totient is φ = 124541171845344.

The previous prime is 124542262245377. The next prime is 124542262245497.

It is a happy number.

124542262245421 is nontrivially palindromic in base 10.

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

It can be written as a sum of positive squares in 2 ways, for example, as 72686622666025 + 51855639579396 = 8525645^2 + 7201086^2 .

It is a cyclic number.

It is not a de Polignac number, because 124542262245421 - 2¹⁵ = 124542262212653 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 (124542262249421) 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, 545028696 + ... + 545257153.

It is an arithmetic number, because the mean of its divisors is an integer number (31135838161375).

Almost surely, 2^{124542262245421} is an apocalyptic number.

It is an amenable number.

124542262245421 is a deficient number, since it is larger than the sum of its proper divisors (1090400079).

124542262245421 is a wasteful number, since it uses less digits than its factorization.

124542262245421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1090400078.

The product of its digits is 2457600, while the sum is 46.

The spelling of 124542262245421 in words is "one hundred twenty-four trillion, five hundred forty-two billion, two hundred sixty-two million, two hundred forty-five thousand, four hundred twenty-one".