402144411 has 4 divisors (see below), whose sum is σ = 536192552. Its totient is φ = 268096272.

The previous prime is 402144403. The next prime is 402144427. The reversal of 402144411 is 114441204.

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

It is not a de Polignac number, because 402144411 - 2³ = 402144403 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (402144011) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 67024066 + ... + 67024071.

It is an arithmetic number, because the mean of its divisors is an integer number (134048138).

Almost surely, 2^402144411 is an apocalyptic number.

402144411 is a deficient number, since it is larger than the sum of its proper divisors (134048141).

402144411 is a wasteful number, since it uses less digits than its factorization.

402144411 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 134048140.

The product of its (nonzero) digits is 512, while the sum is 21.

The square root of 402144411 is about 20053.5386154165. The cubic root of 402144411 is about 738.1206334041.

Adding to 402144411 its reverse (114441204), we get a palindrome (516585615).

The spelling of 402144411 in words is "four hundred two million, one hundred forty-four thousand, four hundred eleven".