40120254 has 24 divisors (see below), whose sum is σ = 88154352. Its totient is φ = 13184640.

The previous prime is 40120219. The next prime is 40120259. The reversal of 40120254 is 45202104.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40120259) 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, 14419 + ... + 16974.

It is an arithmetic number, because the mean of its divisors is an integer number (3673098).

Almost surely, 2^40120254 is an apocalyptic number.

40120254 is an abundant number, since it is smaller than the sum of its proper divisors (48034098).

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

40120254 is a wasteful number, since it uses less digits than its factorization.

40120254 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31472 (or 31469 counting only the distinct ones).

The product of its (nonzero) digits is 320, while the sum is 18.

The square root of 40120254 is about 6334.0550992236. The cubic root of 40120254 is about 342.3375655425.

Adding to 40120254 its reverse (45202104), we get a palindrome (85322358).

The spelling of 40120254 in words is "forty million, one hundred twenty thousand, two hundred fifty-four".