124403434545 has 32 divisors (see below), whose sum is σ = 221748307200. Its totient is φ = 59132876544.

The previous prime is 124403434543. The next prime is 124403434549. The reversal of 124403434545 is 545434304421.

It is not a de Polignac number, because 124403434545 - 2¹ = 124403434543 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is not an unprimeable number, because it can be changed into a prime (124403434543) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 10993765 + ... + 11005074.

It is an arithmetic number, because the mean of its divisors is an integer number (6929634600).

Almost surely, 2^124403434545 is an apocalyptic number.

124403434545 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

124403434545 is a deficient number, since it is larger than the sum of its proper divisors (97344872655).

124403434545 is a wasteful number, since it uses less digits than its factorization.

124403434545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21998889.

The product of its (nonzero) digits is 460800, while the sum is 39.

Adding to 124403434545 its reverse (545434304421), we get a palindrome (669837738966).

The spelling of 124403434545 in words is "one hundred twenty-four billion, four hundred three million, four hundred thirty-four thousand, five hundred forty-five".