42142426 has 8 divisors (see below), whose sum is σ = 63865620. Its totient is φ = 20853888.

The previous prime is 42142421. The next prime is 42142427. The reversal of 42142426 is 62424124.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 37515625 + 4626801 = 6125^2 + 2151^2 .

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 42142426.

It is not an unprimeable number, because it can be changed into a prime (42142421) 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, 108421 + ... + 108808.

Almost surely, 2^42142426 is an apocalyptic number.

42142426 is a deficient number, since it is larger than the sum of its proper divisors (21723194).

42142426 is a wasteful number, since it uses less digits than its factorization.

42142426 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 217328.

The product of its digits is 3072, while the sum is 25.

The square root of 42142426 is about 6491.7198029490. The cubic root of 42142426 is about 347.9951390962.

The spelling of 42142426 in words is "forty-two million, one hundred forty-two thousand, four hundred twenty-six".