40121093 has 2 divisors, whose sum is σ = 40121094. Its totient is φ = 40121092.

The previous prime is 40121077. The next prime is 40121119. The reversal of 40121093 is 39012104.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 30492484 + 9628609 = 5522^2 + 3103^2 .

It is a cyclic number.

It is not a de Polignac number, because 40121093 - 2⁴ = 40121077 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40121023) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20060546 + 20060547.

It is an arithmetic number, because the mean of its divisors is an integer number (20060547).

Almost surely, 2^40121093 is an apocalyptic number.

It is an amenable number.

40121093 is a deficient number, since it is larger than the sum of its proper divisors (1).

40121093 is an equidigital number, since it uses as much as digits as its factorization.

40121093 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 216, while the sum is 20.

The square root of 40121093 is about 6334.1213281717. The cubic root of 40121093 is about 342.3399518618.

Adding to 40121093 its reverse (39012104), we get a palindrome (79133197).

The spelling of 40121093 in words is "forty million, one hundred twenty-one thousand, ninety-three".