1405601123 has 8 divisors (see below), whose sum is σ = 1488788928. Its totient is φ = 1322469504.

The previous prime is 1405601111. The next prime is 1405601137. The reversal of 1405601123 is 3211065041.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1405601123 - 2¹⁰ = 1405600099 is a prime.

It is a super-2 number, since 2×1405601123² = 3951429033957722258, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1405601623) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 44465 + ... + 69197.

It is an arithmetic number, because the mean of its divisors is an integer number (186098616).

Almost surely, 2^1405601123 is an apocalyptic number.

1405601123 is a deficient number, since it is larger than the sum of its proper divisors (83187805).

1405601123 is a wasteful number, since it uses less digits than its factorization.

1405601123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28093.

The product of its (nonzero) digits is 720, while the sum is 23.

The square root of 1405601123 is about 37491.3473084124. The cubic root of 1405601123 is about 1120.1788412860.

Adding to 1405601123 its reverse (3211065041), we get a palindrome (4616666164).

The spelling of 1405601123 in words is "one billion, four hundred five million, six hundred one thousand, one hundred twenty-three".