743240042 has 4 divisors (see below), whose sum is σ = 1114860066. Its totient is φ = 371620020.

The previous prime is 743240039. The next prime is 743240059. The reversal of 743240042 is 240042347.

743240042 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 467381161 + 275858881 = 21619^2 + 16609^2 .

It is a junction number, because it is equal to n+sod(n) for n = 743239993 and 743240020.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 185810009 + ... + 185810012.

Almost surely, 2^743240042 is an apocalyptic number.

743240042 is a deficient number, since it is larger than the sum of its proper divisors (371620024).

743240042 is a wasteful number, since it uses less digits than its factorization.

743240042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 371620023.

The product of its (nonzero) digits is 5376, while the sum is 26.

The square root of 743240042 is about 27262.4291287479. The cubic root of 743240042 is about 905.8223519390.

Adding to 743240042 its reverse (240042347), we get a palindrome (983282389).

It can be divided in two parts, 7432 and 40042, that added together give a palindrome (47474).

The spelling of 743240042 in words is "seven hundred forty-three million, two hundred forty thousand, forty-two".