240742 has 4 divisors (see below), whose sum is σ = 361116. Its totient is φ = 120370.
The previous prime is 240739. The next prime is 240743. The reversal of 240742 is 247042.
It is a semiprime because it is the product of two primes.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (240743) by changing a digit.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60184 + ... + 60187.
It is an arithmetic number, because the mean of its divisors is an integer number (90279).
2240742 is an apocalyptic number.
240742 is a deficient number, since it is larger than the sum of its proper divisors (120374).
240742 is a wasteful number, since it uses less digits than its factorization.
240742 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 120373.
The product of its (nonzero) digits is 448, while the sum is 19.
The square root of 240742 is about 490.6546647083. The cubic root of 240742 is about 62.2086277462.
Adding to 240742 its reverse (247042), we get a palindrome (487784).
The spelling of 240742 in words is "two hundred forty thousand, seven hundred forty-two", and thus it is an iban number.
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