1230042405 has 32 divisors (see below), whose sum is σ = 2022925824. Its totient is φ = 637917696.

The previous prime is 1230042329. The next prime is 1230042413. The reversal of 1230042405 is 5042400321.

It is not a de Polignac number, because 1230042405 - 2²¹ = 1227945253 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 105129 + ... + 116241.

It is an arithmetic number, because the mean of its divisors is an integer number (63216432).

Almost surely, 2^1230042405 is an apocalyptic number.

1230042405 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1230042405 is a deficient number, since it is larger than the sum of its proper divisors (792883419).

1230042405 is a wasteful number, since it uses less digits than its factorization.

1230042405 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11325.

The product of its (nonzero) digits is 960, while the sum is 21.

The square root of 1230042405 is about 35071.9603814785. The cubic root of 1230042405 is about 1071.4535824130.

Adding to 1230042405 its reverse (5042400321), we get a palindrome (6272442726).

The spelling of 1230042405 in words is "one billion, two hundred thirty million, forty-two thousand, four hundred five".