40121130 has 64 divisors (see below), whose sum is σ = 113614848. Its totient is φ = 8873280.

The previous prime is 40121129. The next prime is 40121149. The reversal of 40121130 is 3112104.

It is a happy 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 31 ways as a sum of consecutive naturals, for example, 3429 + ... + 9591.

It is an arithmetic number, because the mean of its divisors is an integer number (1775232).

Almost surely, 2^40121130 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 40121130, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (56807424).

40121130 is an abundant number, since it is smaller than the sum of its proper divisors (73493718).

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

40121130 is a wasteful number, since it uses less digits than its factorization.

40121130 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6211.

The product of its (nonzero) digits is 24, while the sum is 12.

The square root of 40121130 is about 6334.1242488603. The cubic root of 40121130 is about 342.3400570980.

Adding to 40121130 its reverse (3112104), we get a palindrome (43233234).

The spelling of 40121130 in words is "forty million, one hundred twenty-one thousand, one hundred thirty".