40121355 has 16 divisors (see below), whose sum is σ = 66408480. Its totient is φ = 20659968.

The previous prime is 40121353. The next prime is 40121363. The reversal of 40121355 is 55312104.

It is not a de Polignac number, because 40121355 - 2¹ = 40121353 is a prime.

It is not an unprimeable number, because it can be changed into a prime (40121353) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 45682 + ... + 46551.

It is an arithmetic number, because the mean of its divisors is an integer number (4150530).

Almost surely, 2^40121355 is an apocalyptic number.

40121355 is a deficient number, since it is larger than the sum of its proper divisors (26287125).

40121355 is a wasteful number, since it uses less digits than its factorization.

40121355 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 92270.

The product of its (nonzero) digits is 600, while the sum is 21.

The square root of 40121355 is about 6334.1420097753. The cubic root of 40121355 is about 342.3406970465.

Adding to 40121355 its reverse (55312104), we get a palindrome (95433459).

The spelling of 40121355 in words is "forty million, one hundred twenty-one thousand, three hundred fifty-five".