40000120 has 16 divisors (see below), whose sum is σ = 90000360. Its totient is φ = 16000032.

The previous prime is 40000061. The next prime is 40000123. The reversal of 40000120 is 2100004.

40000120 is a modest number, since divided by 120 gives 40 as remainder.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40000123) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 499962 + ... + 500041.

Almost surely, 2^40000120 is an apocalyptic number.

40000120 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

40000120 is an abundant number, since it is smaller than the sum of its proper divisors (50000240).

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

40000120 is a wasteful number, since it uses less digits than its factorization.

40000120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1000014 (or 1000010 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 7.

The square root of 40000120 is about 6324.5648071626. The cubic root of 40000120 is about 341.9955313302.

Adding to 40000120 its reverse (2100004), we get a palindrome (42100124).

The spelling of 40000120 in words is "forty million, one hundred twenty", and thus it is an aban number.