42751274 has 8 divisors (see below), whose sum is σ = 65691108. Its totient is φ = 20854240.

The previous prime is 42751259. The next prime is 42751279. The reversal of 42751274 is 47215724.

It can be written as a sum of positive squares in 2 ways, for example, as 40005625 + 2745649 = 6325^2 + 1657^2 .

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

It is a self number, because there is not a number n which added to its sum of digits gives 42751274.

It is not an unprimeable number, because it can be changed into a prime (42751279) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 260597 + ... + 260760.

Almost surely, 2^42751274 is an apocalyptic number.

42751274 is a deficient number, since it is larger than the sum of its proper divisors (22939834).

42751274 is a wasteful number, since it uses less digits than its factorization.

42751274 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 521400.

The product of its digits is 15680, while the sum is 32.

The square root of 42751274 is about 6538.4458398002. The cubic root of 42751274 is about 349.6630062456.

Adding to 42751274 its reverse (47215724), we get a palindrome (89966998).

The spelling of 42751274 in words is "forty-two million, seven hundred fifty-one thousand, two hundred seventy-four".