40120293 has 16 divisors (see below), whose sum is σ = 55411200. Its totient is φ = 25794240.

The previous prime is 40120273. The next prime is 40120309. The reversal of 40120293 is 39202104.

It is not a de Polignac number, because 40120293 - 2¹⁴ = 40103909 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40120273) 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, 35623 + ... + 36731.

It is an arithmetic number, because the mean of its divisors is an integer number (3463200).

Almost surely, 2^40120293 is an apocalyptic number.

It is an amenable number.

40120293 is a deficient number, since it is larger than the sum of its proper divisors (15290907).

40120293 is a wasteful number, since it uses less digits than its factorization.

40120293 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1532.

The product of its (nonzero) digits is 432, while the sum is 21.

The square root of 40120293 is about 6334.0581778193. The cubic root of 40120293 is about 342.3376764687.

Adding to 40120293 its reverse (39202104), we get a palindrome (79322397).

The spelling of 40120293 in words is "forty million, one hundred twenty thousand, two hundred ninety-three".