142027540 has 12 divisors (see below), whose sum is σ = 298257876. Its totient is φ = 56811008.

The previous prime is 142027531. The next prime is 142027547. The reversal of 142027540 is 45720241.

It can be written as a sum of positive squares in 2 ways, for example, as 95296644 + 46730896 = 9762^2 + 6836^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (142027547) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3550669 + ... + 3550708.

It is an arithmetic number, because the mean of its divisors is an integer number (24854823).

Almost surely, 2^142027540 is an apocalyptic number.

142027540 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

142027540 is an abundant number, since it is smaller than the sum of its proper divisors (156230336).

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

142027540 is a wasteful number, since it uses less digits than its factorization.

142027540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7101386 (or 7101384 counting only the distinct ones).

The product of its (nonzero) digits is 2240, while the sum is 25.

The square root of 142027540 is about 11917.5307845208. The cubic root of 142027540 is about 521.7440699190.

Adding to 142027540 its reverse (45720241), we get a palindrome (187747781).

The spelling of 142027540 in words is "one hundred forty-two million, twenty-seven thousand, five hundred forty".