240402133 has 4 divisors (see below), whose sum is σ = 245517120. Its totient is φ = 235287148.

The previous prime is 240402131. The next prime is 240402137. The reversal of 240402133 is 331204042.

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 240402133 - 2¹ = 240402131 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 240402133.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (240402131) 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, 2557423 + ... + 2557516.

It is an arithmetic number, because the mean of its divisors is an integer number (61379280).

Almost surely, 2^240402133 is an apocalyptic number.

It is an amenable number.

240402133 is a deficient number, since it is larger than the sum of its proper divisors (5114987).

240402133 is an equidigital number, since it uses as much as digits as its factorization.

240402133 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5114986.

The product of its (nonzero) digits is 576, while the sum is 19.

The square root of 240402133 is about 15504.9067394809. The cubic root of 240402133 is about 621.7933966070.

Adding to 240402133 its reverse (331204042), we get a palindrome (571606175).

The spelling of 240402133 in words is "two hundred forty million, four hundred two thousand, one hundred thirty-three".