40212404 has 6 divisors (see below), whose sum is σ = 70371714. Its totient is φ = 20106200.

The previous prime is 40212397. The next prime is 40212407. The reversal of 40212404 is 40421204.

It can be written as a sum of positive squares in only one way, i.e., 39664804 + 547600 = 6298^2 + 740^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40212407) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5026547 + ... + 5026554.

It is an arithmetic number, because the mean of its divisors is an integer number (11728619).

Almost surely, 2^40212404 is an apocalyptic number.

It is an amenable number.

40212404 is a deficient number, since it is larger than the sum of its proper divisors (30159310).

40212404 is a wasteful number, since it uses less digits than its factorization.

40212404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10053105 (or 10053103 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 17.

The square root of 40212404 is about 6341.3250981163. The cubic root of 40212404 is about 342.5994638930.

Adding to 40212404 its reverse (40421204), we get a palindrome (80633608).

The spelling of 40212404 in words is "forty million, two hundred twelve thousand, four hundred four".