42144826 has 4 divisors (see below), whose sum is σ = 63217242. Its totient is φ = 21072412.

The previous prime is 42144803. The next prime is 42144829. The reversal of 42144826 is 62844124.

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., 28462225 + 13682601 = 5335^2 + 3699^2 .

It is not an unprimeable number, because it can be changed into a prime (42144829) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10536205 + ... + 10536208.

Almost surely, 2^42144826 is an apocalyptic number.

42144826 is a deficient number, since it is larger than the sum of its proper divisors (21072416).

42144826 is a wasteful number, since it uses less digits than its factorization.

42144826 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21072415.

The product of its digits is 12288, while the sum is 31.

The square root of 42144826 is about 6491.9046511790. The cubic root of 42144826 is about 348.0017450478.

The spelling of 42144826 in words is "forty-two million, one hundred forty-four thousand, eight hundred twenty-six".