140542120 has 32 divisors (see below), whose sum is σ = 327126600. Its totient is φ = 54277888.

The previous prime is 140542117. The next prime is 140542123. The reversal of 140542120 is 21245041.

It is an interprime number because it is at equal distance from previous prime (140542117) and next prime (140542123).

It can be written as a sum of positive squares in 4 ways, for example, as 89075844 + 51466276 = 9438^2 + 7174^2 .

It is not an unprimeable number, because it can be changed into a prime (140542123) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 59419 + ... + 61738.

Almost surely, 2^140542120 is an apocalyptic number.

140542120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

140542120 is an abundant number, since it is smaller than the sum of its proper divisors (186584480).

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

140542120 is a wasteful number, since it uses less digits than its factorization.

140542120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 121197 (or 121193 counting only the distinct ones).

The product of its (nonzero) digits is 320, while the sum is 19.

The square root of 140542120 is about 11855.0461829552. The cubic root of 140542120 is about 519.9187742952.

Adding to 140542120 its reverse (21245041), we get a palindrome (161787161).

The spelling of 140542120 in words is "one hundred forty million, five hundred forty-two thousand, one hundred twenty".