1235340342405 has 128 divisors (see below), whose sum is σ = 2518220275200. Its totient is φ = 569192804352.

The previous prime is 1235340342349. The next prime is 1235340342409. The reversal of 1235340342405 is 5042430435321.

1235340342405 is a `hidden beast` number, since 1 + 2 + 3 + 5 + 3 + 403 + 4 + 240 + 5 = 666.

It is not a de Polignac number, because 1235340342405 - 2¹⁹ = 1235339818117 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1235340342405.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1235340342409) 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 127 ways as a sum of consecutive naturals, for example, 5224807 + ... + 5456123.

It is an arithmetic number, because the mean of its divisors is an integer number (19673595900).

Almost surely, 2^{1235340342405} is an apocalyptic number.

1235340342405 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1235340342405 is an abundant number, since it is smaller than the sum of its proper divisors (1282879932795).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1235340342405 is a wasteful number, since it uses less digits than its factorization.

1235340342405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 231540 (or 231534 counting only the distinct ones).

The product of its (nonzero) digits is 172800, while the sum is 36.

Adding to 1235340342405 its reverse (5042430435321), we get a palindrome (6277770777726).

The spelling of 1235340342405 in words is "one trillion, two hundred thirty-five billion, three hundred forty million, three hundred forty-two thousand, four hundred five".