124420450155 has 16 divisors (see below), whose sum is σ = 209550232320. Its totient is φ = 62865069408.

The previous prime is 124420450111. The next prime is 124420450157. The reversal of 124420450155 is 551054024421.

It is a happy number.

It is not a de Polignac number, because 124420450155 - 2¹³ = 124420441963 is a prime.

It is not an unprimeable number, because it can be changed into a prime (124420450157) 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, 218281207 + ... + 218281776.

It is an arithmetic number, because the mean of its divisors is an integer number (13096889520).

Almost surely, 2^124420450155 is an apocalyptic number.

124420450155 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

124420450155 is a deficient number, since it is larger than the sum of its proper divisors (85129782165).

124420450155 is a wasteful number, since it uses less digits than its factorization.

124420450155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 436563010.

The product of its (nonzero) digits is 32000, while the sum is 33.

Adding to 124420450155 its reverse (551054024421), we get a palindrome (675474474576).

The spelling of 124420450155 in words is "one hundred twenty-four billion, four hundred twenty million, four hundred fifty thousand, one hundred fifty-five".