1405101243 has 64 divisors (see below), whose sum is σ = 2511129600. Its totient is φ = 677859840.

The previous prime is 1405101223. The next prime is 1405101259. The reversal of 1405101243 is 3421015041.

It is not a de Polignac number, because 1405101243 - 2¹⁰ = 1405100219 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is not an unprimeable number, because it can be changed into a prime (1405101223) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 145753 + ... + 155093.

It is an arithmetic number, because the mean of its divisors is an integer number (39236400).

Almost surely, 2^1405101243 is an apocalyptic number.

1405101243 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

1405101243 is a deficient number, since it is larger than the sum of its proper divisors (1106028357).

1405101243 is a wasteful number, since it uses less digits than its factorization.

1405101243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9412.

The product of its (nonzero) digits is 480, while the sum is 21.

The square root of 1405101243 is about 37484.6801106799. The cubic root of 1405101243 is about 1120.0460341942.

Adding to 1405101243 its reverse (3421015041), we get a palindrome (4826116284).

The spelling of 1405101243 in words is "one billion, four hundred five million, one hundred one thousand, two hundred forty-three".