240261157 has 4 divisors (see below), whose sum is σ = 244333440. Its totient is φ = 236188876.

The previous prime is 240261121. The next prime is 240261173. The reversal of 240261157 is 751162042.

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 240261157 - 2¹⁹ = 239736869 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 (240561157) by changing a digit.

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, 2036053 + ... + 2036170.

It is an arithmetic number, because the mean of its divisors is an integer number (61083360).

Almost surely, 2^240261157 is an apocalyptic number.

It is an amenable number.

240261157 is a deficient number, since it is larger than the sum of its proper divisors (4072283).

240261157 is an equidigital number, since it uses as much as digits as its factorization.

240261157 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4072282.

The product of its (nonzero) digits is 3360, while the sum is 28.

The square root of 240261157 is about 15500.3598990475. The cubic root of 240261157 is about 621.6718293465.

The spelling of 240261157 in words is "two hundred forty million, two hundred sixty-one thousand, one hundred fifty-seven".