120424001405 has 4 divisors (see below), whose sum is σ = 144508801692. Its totient is φ = 96339201120.

The previous prime is 120424001323. The next prime is 120424001461. The reversal of 120424001405 is 504100424021.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 504100424021 = 2843 ⋅177312847.

It can be written as a sum of positive squares in 2 ways, for example, as 50273711524 + 70150289881 = 224218^2 + 264859^2 .

It is not a de Polignac number, because 120424001405 - 2¹⁴ = 120423985021 is a prime.

It is a super-2 number, since 2×120424001405² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12042400136 + ... + 12042400145.

It is an arithmetic number, because the mean of its divisors is an integer number (36127200423).

Almost surely, 2^120424001405 is an apocalyptic number.

It is an amenable number.

120424001405 is a deficient number, since it is larger than the sum of its proper divisors (24084800287).

120424001405 is an equidigital number, since it uses as much as digits as its factorization.

120424001405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24084800286.

The product of its (nonzero) digits is 1280, while the sum is 23.

Adding to 120424001405 its reverse (504100424021), we get a palindrome (624524425426).

The spelling of 120424001405 in words is "one hundred twenty billion, four hundred twenty-four million, one thousand, four hundred five".