402432441 has 4 divisors (see below), whose sum is σ = 536576592. Its totient is φ = 268288292.

The previous prime is 402432419. The next prime is 402432467. The reversal of 402432441 is 144234204.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 402432441 - 2⁵ = 402432409 is a prime.

It is not an unprimeable number, because it can be changed into a prime (402432491) 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, 67072071 + ... + 67072076.

It is an arithmetic number, because the mean of its divisors is an integer number (134144148).

Almost surely, 2^402432441 is an apocalyptic number.

It is an amenable number.

402432441 is a deficient number, since it is larger than the sum of its proper divisors (134144151).

402432441 is a wasteful number, since it uses less digits than its factorization.

402432441 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 134144150.

The product of its (nonzero) digits is 3072, while the sum is 24.

The square root of 402432441 is about 20060.7188555146. The cubic root of 402432441 is about 738.2968140190.

Adding to 402432441 its reverse (144234204), we get a palindrome (546666645).

The spelling of 402432441 in words is "four hundred two million, four hundred thirty-two thousand, four hundred forty-one".