120140424 has 24 divisors (see below), whose sum is σ = 325380510. Its totient is φ = 40046784.

The previous prime is 120140387. The next prime is 120140429. The reversal of 120140424 is 424041021.

120140424 is a `hidden beast` number, since 1 + 201 + 40 + 424 = 666.

It can be written as a sum of positive squares in only one way, i.e., 64160100 + 55980324 = 8010^2 + 7482^2 .

It is a tau number, because it is divible by the number of its divisors (24).

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

It is a junction number, because it is equal to n+sod(n) for n = 120140397 and 120140406.

It is not an unprimeable number, because it can be changed into a prime (120140429) 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 5 ways as a sum of consecutive naturals, for example, 834237 + ... + 834380.

Almost surely, 2^120140424 is an apocalyptic number.

It is an amenable number.

120140424 is an abundant number, since it is smaller than the sum of its proper divisors (205240086).

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

120140424 is a wasteful number, since it uses less digits than its factorization.

120140424 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1668629 (or 1668622 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 18.

The square root of 120140424 is about 10960.8587254831. The cubic root of 120140424 is about 493.4347372916.

Adding to 120140424 its reverse (424041021), we get a palindrome (544181445).

The spelling of 120140424 in words is "one hundred twenty million, one hundred forty thousand, four hundred twenty-four".