40421404 has 12 divisors (see below), whose sum is σ = 72072504. Its totient is φ = 19829264.

The previous prime is 40421399. The next prime is 40421411. The reversal of 40421404 is 40412404.

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, 95122 + ... + 95545.

It is an arithmetic number, because the mean of its divisors is an integer number (6006042).

Almost surely, 2^40421404 is an apocalyptic number.

It is an amenable number.

40421404 is a deficient number, since it is larger than the sum of its proper divisors (31651100).

40421404 is a wasteful number, since it uses less digits than its factorization.

40421404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 190724 (or 190722 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 19.

The square root of 40421404 is about 6357.7829469085. The cubic root of 40421404 is about 343.1919808567.

Adding to 40421404 its reverse (40412404), we get a palindrome (80833808).

The spelling of 40421404 in words is "forty million, four hundred twenty-one thousand, four hundred four".