40200120 has 48 divisors (see below), whose sum is σ = 130651560. Its totient is φ = 10719936.

The previous prime is 40200109. The next prime is 40200133. The reversal of 40200120 is 2100204.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 55474 + ... + 56193.

Almost surely, 2^40200120 is an apocalyptic number.

40200120 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

40200120 is an abundant number, since it is smaller than the sum of its proper divisors (90451440).

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

40200120 is a wasteful number, since it uses less digits than its factorization.

40200120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 111684 (or 111677 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 9.

The square root of 40200120 is about 6340.3564568563. The cubic root of 40200120 is about 342.5645748206.

Adding to 40200120 its reverse (2100204), we get a palindrome (42300324).

The spelling of 40200120 in words is "forty million, two hundred thousand, one hundred twenty".