402240441 has 16 divisors (see below), whose sum is σ = 543156224. Its totient is φ = 264758544.

The previous prime is 402240413. The next prime is 402240481. The reversal of 402240441 is 144042204.

It is not a de Polignac number, because 402240441 - 2⁵ = 402240409 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (402240401) 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, 111630 + ... + 115176.

It is an arithmetic number, because the mean of its divisors is an integer number (33947264).

Almost surely, 2^402240441 is an apocalyptic number.

It is an amenable number.

402240441 is a deficient number, since it is larger than the sum of its proper divisors (140915783).

402240441 is a wasteful number, since it uses less digits than its factorization.

402240441 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4020.

The product of its (nonzero) digits is 1024, while the sum is 21.

The square root of 402240441 is about 20055.9328130107. The cubic root of 402240441 is about 738.1793818546.

Adding to 402240441 its reverse (144042204), we get a palindrome (546282645).

The spelling of 402240441 in words is "four hundred two million, two hundred forty thousand, four hundred forty-one".