40421450 has 24 divisors (see below), whose sum is σ = 75634668. Its totient is φ = 16071680.

The previous prime is 40421443. The next prime is 40421453. The reversal of 40421450 is 5412404.

It can be written as a sum of positive squares in 6 ways, for example, as 34374769 + 6046681 = 5863^2 + 2459^2 .

It is not an unprimeable number, because it can be changed into a prime (40421453) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 6314 + ... + 10986.

Almost surely, 2^40421450 is an apocalyptic number.

40421450 is a deficient number, since it is larger than the sum of its proper divisors (35213218).

40421450 is a wasteful number, since it uses less digits than its factorization.

40421450 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4858 (or 4853 counting only the distinct ones).

The product of its (nonzero) digits is 640, while the sum is 20.

The square root of 40421450 is about 6357.7865645207. The cubic root of 40421450 is about 343.1921110421.

Adding to 40421450 its reverse (5412404), we get a palindrome (45833854).

The spelling of 40421450 in words is "forty million, four hundred twenty-one thousand, four hundred fifty".