124442405 has 4 divisors (see below), whose sum is σ = 149330892. Its totient is φ = 99553920.

The previous prime is 124442377. The next prime is 124442407. The reversal of 124442405 is 504244421.

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 17960644 + 106481761 = 4238^2 + 10319^2 .

It is not a de Polignac number, because 124442405 - 2¹⁸ = 124180261 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (124442407) 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, 12444236 + ... + 12444245.

It is an arithmetic number, because the mean of its divisors is an integer number (37332723).

Almost surely, 2^124442405 is an apocalyptic number.

It is an amenable number.

124442405 is a deficient number, since it is larger than the sum of its proper divisors (24888487).

124442405 is an equidigital number, since it uses as much as digits as its factorization.

124442405 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24888486.

The product of its (nonzero) digits is 5120, while the sum is 26.

The square root of 124442405 is about 11155.3756099918. The cubic root of 124442405 is about 499.2554317867.

Adding to 124442405 its reverse (504244421), we get a palindrome (628686826).

The spelling of 124442405 in words is "one hundred twenty-four million, four hundred forty-two thousand, four hundred five".