240043493 has 4 divisors (see below), whose sum is σ = 240118560. Its totient is φ = 239968428.

The previous prime is 240043487. The next prime is 240043499. The reversal of 240043493 is 394340042.

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, and also an emirpimes, since its reverse is a distinct semiprime: 394340042 = 2 ⋅197170021.

It is an interprime number because it is at equal distance from previous prime (240043487) and next prime (240043499).

It is a cyclic number.

It is not a de Polignac number, because 240043493 - 2⁴ = 240043477 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 (240043499) 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, 32513 + ... + 39206.

It is an arithmetic number, because the mean of its divisors is an integer number (60029640).

Almost surely, 2^240043493 is an apocalyptic number.

It is an amenable number.

240043493 is a deficient number, since it is larger than the sum of its proper divisors (75067).

240043493 is an equidigital number, since it uses as much as digits as its factorization.

240043493 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 75066.

The product of its (nonzero) digits is 10368, while the sum is 29.

The square root of 240043493 is about 15493.3370517781. The cubic root of 240043493 is about 621.4840386076.

The spelling of 240043493 in words is "two hundred forty million, forty-three thousand, four hundred ninety-three".