402432111 has 16 divisors (see below), whose sum is σ = 615429120. Its totient is φ = 259633080.

The previous prime is 402432089. The next prime is 402432119. The reversal of 402432111 is 111234204.

It is not a de Polignac number, because 402432111 - 2¹⁰ = 402431087 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (402432119) 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, 239565 + ... + 241238.

It is an arithmetic number, because the mean of its divisors is an integer number (38464320).

Almost surely, 2^402432111 is an apocalyptic number.

402432111 is a deficient number, since it is larger than the sum of its proper divisors (212997009).

402432111 is a wasteful number, since it uses less digits than its factorization.

402432111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 480843 (or 480837 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

The square root of 402432111 is about 20060.7106304837. The cubic root of 402432111 is about 738.2966122145.

Adding to 402432111 its reverse (111234204), we get a palindrome (513666315).

The spelling of 402432111 in words is "four hundred two million, four hundred thirty-two thousand, one hundred eleven".