240423253 has 24 divisors (see below), whose sum is σ = 293518080. Its totient is φ = 196086240.

The previous prime is 240423247. The next prime is 240423263. The reversal of 240423253 is 352324042.

It is not a de Polignac number, because 240423253 - 2¹⁷ = 240292181 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (240423203) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 99700 + ... + 102082.

It is an arithmetic number, because the mean of its divisors is an integer number (12229920).

Almost surely, 2^240423253 is an apocalyptic number.

It is an amenable number.

240423253 is a deficient number, since it is larger than the sum of its proper divisors (53094827).

240423253 is a wasteful number, since it uses less digits than its factorization.

240423253 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2497 (or 2490 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 25.

The square root of 240423253 is about 15505.5877992419. The cubic root of 240423253 is about 621.8116048370.

Adding to 240423253 its reverse (352324042), we get a palindrome (592747295).

The spelling of 240423253 in words is "two hundred forty million, four hundred twenty-three thousand, two hundred fifty-three".