240870457 has 4 divisors (see below), whose sum is σ = 240936016. Its totient is φ = 240804900.

The previous prime is 240870439. The next prime is 240870463. The reversal of 240870457 is 754078042.

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 a de Polignac number, because none of the positive numbers 2^k-240870457 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (240870257) 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, 26919 + ... + 34732.

It is an arithmetic number, because the mean of its divisors is an integer number (60234004).

Almost surely, 2^240870457 is an apocalyptic number.

It is an amenable number.

240870457 is a deficient number, since it is larger than the sum of its proper divisors (65559).

240870457 is an equidigital number, since it uses as much as digits as its factorization.

240870457 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65558.

The product of its (nonzero) digits is 62720, while the sum is 37.

The square root of 240870457 is about 15520.0018363401. The cubic root of 240870457 is about 622.1969036762.

The spelling of 240870457 in words is "two hundred forty million, eight hundred seventy thousand, four hundred fifty-seven".