120101640 has 32 divisors (see below), whose sum is σ = 360305280. Its totient is φ = 32027072.

The previous prime is 120101621. The next prime is 120101647. The reversal of 120101640 is 46101021.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is not an unprimeable number, because it can be changed into a prime (120101647) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 500304 + ... + 500543.

It is an arithmetic number, because the mean of its divisors is an integer number (11259540).

Almost surely, 2^120101640 is an apocalyptic number.

120101640 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

120101640 is an abundant number, since it is smaller than the sum of its proper divisors (240203640).

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

120101640 is a wasteful number, since it uses less digits than its factorization.

120101640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1000861 (or 1000857 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 15.

The square root of 120101640 is about 10959.0893782285. The cubic root of 120101640 is about 493.3816343423.

Adding to 120101640 its reverse (46101021), we get a palindrome (166202661).

The spelling of 120101640 in words is "one hundred twenty million, one hundred one thousand, six hundred forty".