1235234052540 has 72 divisors (see below), whose sum is σ = 3967281143280. Its totient is φ = 310019526144.

The previous prime is 1235234052499. The next prime is 1235234052541. The reversal of 1235234052540 is 452504325321.

1235234052540 is a `hidden beast` number, since 1 + 2 + 3 + 5 + 23 + 40 + 52 + 540 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 1235234052495 and 1235234052504.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1235234052541) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 201832570 + ... + 201838689.

It is an arithmetic number, because the mean of its divisors is an integer number (55101126990).

Almost surely, 2^{1235234052540} is an apocalyptic number.

1235234052540 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1235234052540 is an abundant number, since it is smaller than the sum of its proper divisors (2732047090740).

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

1235234052540 is a wasteful number, since it uses less digits than its factorization.

1235234052540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 403671291 (or 403671286 counting only the distinct ones).

The product of its (nonzero) digits is 144000, while the sum is 36.

Adding to 1235234052540 its reverse (452504325321), we get a palindrome (1687738377861).

The spelling of 1235234052540 in words is "one trillion, two hundred thirty-five billion, two hundred thirty-four million, fifty-two thousand, five hundred forty".