401240033 has 4 divisors (see below), whose sum is σ = 403795860. Its totient is φ = 398684208.

The previous prime is 401240029. The next prime is 401240053. The reversal of 401240033 is 330042104.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 86638864 + 314601169 = 9308^2 + 17737^2 .

It is a cyclic number.

It is not a de Polignac number, because 401240033 - 2² = 401240029 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 401239993 and 401240020.

It is not an unprimeable number, because it can be changed into a prime (401240053) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1277678 + ... + 1277991.

It is an arithmetic number, because the mean of its divisors is an integer number (100948965).

Almost surely, 2^401240033 is an apocalyptic number.

It is an amenable number.

401240033 is a deficient number, since it is larger than the sum of its proper divisors (2555827).

401240033 is a wasteful number, since it uses less digits than its factorization.

401240033 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2555826.

The product of its (nonzero) digits is 288, while the sum is 17.

The square root of 401240033 is about 20030.9768358910. The cubic root of 401240033 is about 737.5669010650.

Adding to 401240033 its reverse (330042104), we get a palindrome (731282137).

The spelling of 401240033 in words is "four hundred one million, two hundred forty thousand, thirty-three".