240402455 has 4 divisors (see below), whose sum is σ = 288482952. Its totient is φ = 192321960.

The previous prime is 240402433. The next prime is 240402469. The reversal of 240402455 is 554204042.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 240402455 - 2⁶ = 240402391 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 24040241 + ... + 24040250.

It is an arithmetic number, because the mean of its divisors is an integer number (72120738).

Almost surely, 2^240402455 is an apocalyptic number.

240402455 is a deficient number, since it is larger than the sum of its proper divisors (48080497).

240402455 is an equidigital number, since it uses as much as digits as its factorization.

240402455 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48080496.

The product of its (nonzero) digits is 6400, while the sum is 26.

The square root of 240402455 is about 15504.9171232871. The cubic root of 240402455 is about 621.7936742215.

Adding to 240402455 its reverse (554204042), we get a palindrome (794606497).

The spelling of 240402455 in words is "two hundred forty million, four hundred two thousand, four hundred fifty-five".