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240742 = 2120371
BaseRepresentation
bin111010110001100110
3110020020101
4322301212
530200432
65054314
72021605
oct726146
9406211
10240742
11154967
12b739a
1385768
1463a3c
154b4e7
hex3ac66

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.

Divisors: 1 2 120371 240742