40203412 has 12 divisors (see below), whose sum is σ = 70429716. Its totient is φ = 20080640.

The previous prime is 40203403. The next prime is 40203421. The reversal of 40203412 is 21430204.

It is an interprime number because it is at equal distance from previous prime (40203403) and next prime (40203421).

It can be written as a sum of positive squares in 2 ways, for example, as 34269316 + 5934096 = 5854^2 + 2436^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 493 + ... + 8980.

It is an arithmetic number, because the mean of its divisors is an integer number (5869143).

Almost surely, 2^40203412 is an apocalyptic number.

It is an amenable number.

40203412 is a deficient number, since it is larger than the sum of its proper divisors (30226304).

40203412 is a wasteful number, since it uses less digits than its factorization.

40203412 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10538 (or 10536 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 16.

The square root of 40203412 is about 6340.6160583968. The cubic root of 40203412 is about 342.5739254710.

Adding to 40203412 its reverse (21430204), we get a palindrome (61633616).

The spelling of 40203412 in words is "forty million, two hundred three thousand, four hundred twelve".