40121652 has 48 divisors (see below), whose sum is σ = 96868800. Its totient is φ = 12917760.

The previous prime is 40121639. The next prime is 40121663. The reversal of 40121652 is 25612104.

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 in 15 ways as a sum of consecutive naturals, for example, 42724 + ... + 43652.

It is an arithmetic number, because the mean of its divisors is an integer number (2018100).

Almost surely, 2^40121652 is an apocalyptic number.

It is an amenable number.

40121652 is an abundant number, since it is smaller than the sum of its proper divisors (56747148).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

40121652 is a wasteful number, since it uses less digits than its factorization.

40121652 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1056 (or 1054 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 21.

The square root of 40121652 is about 6334.1654541068. The cubic root of 40121652 is about 342.3415417748.

Adding to 40121652 its reverse (25612104), we get a palindrome (65733756).

The spelling of 40121652 in words is "forty million, one hundred twenty-one thousand, six hundred fifty-two".