1235200401 has 16 divisors (see below), whose sum is σ = 1846125120. Its totient is φ = 816177600.

The previous prime is 1235200397. The next prime is 1235200423. The reversal of 1235200401 is 1040025321.

It is not a de Polignac number, because 1235200401 - 2² = 1235200397 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1235200201) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 199375 + ... + 205476.

It is an arithmetic number, because the mean of its divisors is an integer number (115382820).

Almost surely, 2^1235200401 is an apocalyptic number.

It is an amenable number.

1235200401 is a deficient number, since it is larger than the sum of its proper divisors (610924719).

1235200401 is a wasteful number, since it uses less digits than its factorization.

1235200401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 404973 (or 404967 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 18.

The square root of 1235200401 is about 35145.4179232514. The cubic root of 1235200401 is about 1072.9491531606.

Adding to 1235200401 its reverse (1040025321), we get a palindrome (2275225722).

The spelling of 1235200401 in words is "one billion, two hundred thirty-five million, two hundred thousand, four hundred one".