124102105 has 4 divisors (see below), whose sum is σ = 148922532. Its totient is φ = 99281680.

The previous prime is 124102103. The next prime is 124102109. The reversal of 124102105 is 501201421.

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 53743561 + 70358544 = 7331^2 + 8388^2 .

It is not a de Polignac number, because 124102105 - 2¹ = 124102103 is a prime.

It is a super-3 number, since 3×124102105³ (a number of 25 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (124102103) 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, 12410206 + ... + 12410215.

It is an arithmetic number, because the mean of its divisors is an integer number (37230633).

Almost surely, 2^124102105 is an apocalyptic number.

It is an amenable number.

124102105 is a deficient number, since it is larger than the sum of its proper divisors (24820427).

124102105 is an equidigital number, since it uses as much as digits as its factorization.

124102105 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24820426.

The product of its (nonzero) digits is 80, while the sum is 16.

The square root of 124102105 is about 11140.1124321077. The cubic root of 124102105 is about 498.7999286285.

Adding to 124102105 its reverse (501201421), we get a palindrome (625303526).

The spelling of 124102105 in words is "one hundred twenty-four million, one hundred two thousand, one hundred five".