240857401 has 2 divisors, whose sum is σ = 240857402. Its totient is φ = 240857400.

The previous prime is 240857399. The next prime is 240857413. The reversal of 240857401 is 104758042.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 228614400 + 12243001 = 15120^2 + 3499^2 .

It is a cyclic number.

It is not a de Polignac number, because 240857401 - 2¹ = 240857399 is a prime.

Together with 240857399, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (240857431) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 120428700 + 120428701.

It is an arithmetic number, because the mean of its divisors is an integer number (120428701).

Almost surely, 2^240857401 is an apocalyptic number.

It is an amenable number.

240857401 is a deficient number, since it is larger than the sum of its proper divisors (1).

240857401 is an equidigital number, since it uses as much as digits as its factorization.

240857401 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 8960, while the sum is 31.

The square root of 240857401 is about 15519.5812121333. The cubic root of 240857401 is about 622.1856617419.

The spelling of 240857401 in words is "two hundred forty million, eight hundred fifty-seven thousand, four hundred one".