124402005 has 96 divisors (see below), whose sum is σ = 281159424. Its totient is φ = 49379328.

The previous prime is 124401983. The next prime is 124402007. The reversal of 124402005 is 500204421.

It is not a de Polignac number, because 124402005 - 2⁵ = 124401973 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (124402007) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 68722 + ... + 70508.

It is an arithmetic number, because the mean of its divisors is an integer number (2928744).

Almost surely, 2^124402005 is an apocalyptic number.

124402005 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

124402005 is an abundant number, since it is smaller than the sum of its proper divisors (156757419).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

124402005 is a wasteful number, since it uses less digits than its factorization.

124402005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1835 (or 1832 counting only the distinct ones).

The product of its (nonzero) digits is 320, while the sum is 18.

The square root of 124402005 is about 11153.5646768197. The cubic root of 124402005 is about 499.2013984837.

Adding to 124402005 its reverse (500204421), we get a palindrome (624606426).

The spelling of 124402005 in words is "one hundred twenty-four million, four hundred two thousand, five".