40121404 has 6 divisors (see below), whose sum is σ = 70212464. Its totient is φ = 20060700.

The previous prime is 40121399. The next prime is 40121423. The reversal of 40121404 is 40412104.

It is a super-3 number, since 3×40121404³ (a number of 24 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5015172 + ... + 5015179.

Almost surely, 2^40121404 is an apocalyptic number.

It is an amenable number.

40121404 is a deficient number, since it is larger than the sum of its proper divisors (30091060).

40121404 is a wasteful number, since it uses less digits than its factorization.

40121404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10030355 (or 10030353 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 16.

The square root of 40121404 is about 6334.1458777013. The cubic root of 40121404 is about 342.3408364127.

Adding to 40121404 its reverse (40412104), we get a palindrome (80533508).

The spelling of 40121404 in words is "forty million, one hundred twenty-one thousand, four hundred four".