142051540 has 12 divisors (see below), whose sum is σ = 298308276. Its totient is φ = 56820608.

The previous prime is 142051537. The next prime is 142051561. The reversal of 142051540 is 45150241.

It can be written as a sum of positive squares in 2 ways, for example, as 18352656 + 123698884 = 4284^2 + 11122^2 .

It is a congruent number.

It is an unprimeable number.

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, 3551269 + ... + 3551308.

It is an arithmetic number, because the mean of its divisors is an integer number (24859023).

Almost surely, 2^142051540 is an apocalyptic number.

142051540 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

142051540 is an abundant number, since it is smaller than the sum of its proper divisors (156256736).

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

142051540 is a wasteful number, since it uses less digits than its factorization.

142051540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7102586 (or 7102584 counting only the distinct ones).

The product of its (nonzero) digits is 800, while the sum is 22.

The square root of 142051540 is about 11918.5376619785. The cubic root of 142051540 is about 521.7734565962.

The spelling of 142051540 in words is "one hundred forty-two million, fifty-one thousand, five hundred forty".