42994426 has 4 divisors (see below), whose sum is σ = 64491642. Its totient is φ = 21497212.

The previous prime is 42994403. The next prime is 42994439. The reversal of 42994426 is 62449924.

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., 33698025 + 9296401 = 5805^2 + 3049^2 .

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, 10748605 + ... + 10748608.

Almost surely, 2^42994426 is an apocalyptic number.

42994426 is a deficient number, since it is larger than the sum of its proper divisors (21497216).

42994426 is a wasteful number, since it uses less digits than its factorization.

42994426 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21497215.

The product of its digits is 124416, while the sum is 40.

The square root of 42994426 is about 6557.0134970122. The cubic root of 42994426 is about 350.3246674459.

The spelling of 42994426 in words is "forty-two million, nine hundred ninety-four thousand, four hundred twenty-six".