40204426 has 4 divisors (see below), whose sum is σ = 60306642. Its totient is φ = 20102212.

The previous prime is 40204421. The next prime is 40204433. The reversal of 40204426 is 62440204.

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., 22099401 + 18105025 = 4701^2 + 4255^2 .

It is a junction number, because it is equal to n+sod(n) for n = 40204397 and 40204406.

It is not an unprimeable number, because it can be changed into a prime (40204421) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10051105 + ... + 10051108.

Almost surely, 2^40204426 is an apocalyptic number.

40204426 is a deficient number, since it is larger than the sum of its proper divisors (20102216).

40204426 is a wasteful number, since it uses less digits than its factorization.

40204426 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20102215.

The product of its (nonzero) digits is 1536, while the sum is 22.

The square root of 40204426 is about 6340.6960185771. The cubic root of 40204426 is about 342.5768055502.

The spelling of 40204426 in words is "forty million, two hundred four thousand, four hundred twenty-six".