1000401235 has 16 divisors (see below), whose sum is σ = 1251591264. Its totient is φ = 766950912.

The previous prime is 1000401229. The next prime is 1000401257. The reversal of 1000401235 is 5321040001.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1000401235 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 32502 + ... + 55291.

It is an arithmetic number, because the mean of its divisors is an integer number (78224454).

Almost surely, 2^1000401235 is an apocalyptic number.

1000401235 is a deficient number, since it is larger than the sum of its proper divisors (251190029).

1000401235 is an equidigital number, since it uses as much as digits as its factorization.

1000401235 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 87894.

The product of its (nonzero) digits is 120, while the sum is 16.

The square root of 1000401235 is about 31629.1200478293. The cubic root of 1000401235 is about 1000.1337271163.

Adding to 1000401235 its reverse (5321040001), we get a palindrome (6321441236).

The spelling of 1000401235 in words is "one billion, four hundred one thousand, two hundred thirty-five".