751642042 has 8 divisors (see below), whose sum is σ = 1127630196. Its totient is φ = 375765312.

The previous prime is 751642037. The next prime is 751642049. The reversal of 751642042 is 240246157.

It can be written as a sum of positive squares in 2 ways, for example, as 687016521 + 64625521 = 26211^2 + 8039^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 751641995 and 751642013.

It is not an unprimeable number, because it can be changed into a prime (751642049) 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, 8223 + ... + 39634.

Almost surely, 2^751642042 is an apocalyptic number.

751642042 is a deficient number, since it is larger than the sum of its proper divisors (375988154).

751642042 is a wasteful number, since it uses less digits than its factorization.

751642042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55712.

The product of its (nonzero) digits is 13440, while the sum is 31.

The square root of 751642042 is about 27416.0909321515. The cubic root of 751642042 is about 909.2228771759. Note that the first 3 decimals are identical.

Adding to 751642042 its reverse (240246157), we get a palindrome (991888199).

The spelling of 751642042 in words is "seven hundred fifty-one million, six hundred forty-two thousand, forty-two".