124421505243 has 16 divisors (see below), whose sum is σ = 193628605440. Its totient is φ = 69585278976.

The previous prime is 124421505223. The next prime is 124421505251. The reversal of 124421505243 is 342505124421.

It is not a de Polignac number, because 124421505243 - 2¹⁰ = 124421504219 is a prime.

It is not an unprimeable number, because it can be changed into a prime (124421505223) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 63029158 + ... + 63031131.

It is an arithmetic number, because the mean of its divisors is an integer number (12101787840).

Almost surely, 2^124421505243 is an apocalyptic number.

124421505243 is a deficient number, since it is larger than the sum of its proper divisors (69207100197).

124421505243 is a wasteful number, since it uses less digits than its factorization.

124421505243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 126060346.

The product of its (nonzero) digits is 38400, while the sum is 33.

Adding to 124421505243 its reverse (342505124421), we get a palindrome (466926629664).

The spelling of 124421505243 in words is "one hundred twenty-four billion, four hundred twenty-one million, five hundred five thousand, two hundred forty-three".