1235402543241 has 24 divisors (see below), whose sum is σ = 1799313612096. Its totient is φ = 816772883040.

The previous prime is 1235402543201. The next prime is 1235402543251. The reversal of 1235402543241 is 1423452045321.

It is a happy number.

1235402543241 is a `hidden beast` number, since 1 + 2 + 3 + 5 + 402 + 5 + 4 + 3 + 241 = 666.

It is not a de Polignac number, because 1235402543241 - 2⁹ = 1235402542729 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1235402543196 and 1235402543205.

It is not an unprimeable number, because it can be changed into a prime (1235402543201) 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, 237085 + ... + 1589658.

It is an arithmetic number, because the mean of its divisors is an integer number (74971400504).

Almost surely, 2^{1235402543241} is an apocalyptic number.

It is an amenable number.

1235402543241 is a deficient number, since it is larger than the sum of its proper divisors (563911068855).

1235402543241 is a wasteful number, since it uses less digits than its factorization.

1235402543241 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1827373 (or 1827370 counting only the distinct ones).

The product of its (nonzero) digits is 115200, while the sum is 36.

Adding to 1235402543241 its reverse (1423452045321), we get a palindrome (2658854588562).

The spelling of 1235402543241 in words is "one trillion, two hundred thirty-five billion, four hundred two million, five hundred forty-three thousand, two hundred forty-one".