120542040 has 128 divisors (see below), whose sum is σ = 404352000. Its totient is φ = 31941504.

The previous prime is 120542017. The next prime is 120542069. The reversal of 120542040 is 40245021.

120542040 is a `hidden beast` number, since 1 + 205 + 420 + 40 = 666.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 257887 + ... + 258353.

It is an arithmetic number, because the mean of its divisors is an integer number (3159000).

Almost surely, 2^120542040 is an apocalyptic number.

120542040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 120542040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (202176000).

120542040 is an abundant number, since it is smaller than the sum of its proper divisors (283809960).

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

120542040 is a wasteful number, since it uses less digits than its factorization.

120542040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 726 (or 716 counting only the distinct ones).

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

The square root of 120542040 is about 10979.1639025929. The cubic root of 120542040 is about 493.9839581300.

Adding to 120542040 its reverse (40245021), we get a palindrome (160787061).

The spelling of 120542040 in words is "one hundred twenty million, five hundred forty-two thousand, forty".