40121253 has 12 divisors (see below), whose sum is σ = 58102668. Its totient is φ = 26678400.

The previous prime is 40121251. The next prime is 40121261. The reversal of 40121253 is 35212104.

40121253 is a `hidden beast` number, since 401 + 212 + 53 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 24770529 + 15350724 = 4977^2 + 3918^2 .

It is not a de Polignac number, because 40121253 - 2¹ = 40121251 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40121251) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1950 + ... + 9167.

It is an arithmetic number, because the mean of its divisors is an integer number (4841889).

Almost surely, 2^40121253 is an apocalyptic number.

It is an amenable number.

40121253 is a deficient number, since it is larger than the sum of its proper divisors (17981415).

40121253 is a wasteful number, since it uses less digits than its factorization.

40121253 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11524 (or 11521 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 18.

The square root of 40121253 is about 6334.1339581667. The cubic root of 40121253 is about 342.3404069368.

Adding to 40121253 its reverse (35212104), we get a palindrome (75333357).

The spelling of 40121253 in words is "forty million, one hundred twenty-one thousand, two hundred fifty-three".