402105243 has 16 divisors (see below), whose sum is σ = 544313216. Its totient is φ = 263995200.

The previous prime is 402105239. The next prime is 402105281. The reversal of 402105243 is 342501204.

It is not a de Polignac number, because 402105243 - 2² = 402105239 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (402105043) 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, 229296 + ... + 231042.

It is an arithmetic number, because the mean of its divisors is an integer number (34019576).

Almost surely, 2^402105243 is an apocalyptic number.

402105243 is a deficient number, since it is larger than the sum of its proper divisors (142207973).

402105243 is a wasteful number, since it uses less digits than its factorization.

402105243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2874.

The product of its (nonzero) digits is 960, while the sum is 21.

The square root of 402105243 is about 20052.5620058884. The cubic root of 402105243 is about 738.0966688391.

Adding to 402105243 its reverse (342501204), we get a palindrome (744606447).

The spelling of 402105243 in words is "four hundred two million, one hundred five thousand, two hundred forty-three".