142977544 has 16 divisors (see below), whose sum is σ = 270457020. Its totient is φ = 70855680.

The previous prime is 142977529. The next prime is 142977553. The reversal of 142977544 is 445779241.

It can be written as a sum of positive squares in 2 ways, for example, as 124055044 + 18922500 = 11138^2 + 4350^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 142977544.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 78177 + ... + 79984.

Almost surely, 2^142977544 is an apocalyptic number.

It is an amenable number.

142977544 is a deficient number, since it is larger than the sum of its proper divisors (127479476).

142977544 is a wasteful number, since it uses less digits than its factorization.

142977544 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 158280 (or 158276 counting only the distinct ones).

The product of its digits is 282240, while the sum is 43.

The square root of 142977544 is about 11957.3217737084. The cubic root of 142977544 is about 522.9047788652.

The spelling of 142977544 in words is "one hundred forty-two million, nine hundred seventy-seven thousand, five hundred forty-four".