402241111 has 4 divisors (see below), whose sum is σ = 402281224. Its totient is φ = 402201000.

The previous prime is 402241109. The next prime is 402241123. The reversal of 402241111 is 111142204.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 402241111 - 2¹ = 402241109 is a prime.

It is a super-2 number, since 2×402241111² = 323595822757028642, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (402281111) 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, 9961 + ... + 30061.

It is an arithmetic number, because the mean of its divisors is an integer number (100570306).

Almost surely, 2^402241111 is an apocalyptic number.

402241111 is a deficient number, since it is larger than the sum of its proper divisors (40113).

402241111 is a wasteful number, since it uses less digits than its factorization.

402241111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40112.

The product of its (nonzero) digits is 64, while the sum is 16.

The square root of 402241111 is about 20055.9495162907. The cubic root of 402241111 is about 738.1797917089.

Adding to 402241111 its reverse (111142204), we get a palindrome (513383315).

The spelling of 402241111 in words is "four hundred two million, two hundred forty-one thousand, one hundred eleven".