42293842 has 4 divisors (see below), whose sum is σ = 63440766. Its totient is φ = 21146920.

The previous prime is 42293833. The next prime is 42293869. The reversal of 42293842 is 24839224.

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., 32615521 + 9678321 = 5711^2 + 3111^2 .

It is a super-2 number, since 2×42293842² = 3577538142241928, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 42293798 and 42293807.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 10573459 + ... + 10573462.

Almost surely, 2^42293842 is an apocalyptic number.

42293842 is a deficient number, since it is larger than the sum of its proper divisors (21146924).

42293842 is a wasteful number, since it uses less digits than its factorization.

42293842 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21146923.

The product of its digits is 27648, while the sum is 34.

The square root of 42293842 is about 6503.3715871077. The cubic root of 42293842 is about 348.4114183337.

The spelling of 42293842 in words is "forty-two million, two hundred ninety-three thousand, eight hundred forty-two".