142752961 has 8 divisors (see below), whose sum is σ = 162777384. Its totient is φ = 124020480.

The previous prime is 142752949. The next prime is 142752977. The reversal of 142752961 is 169257241.

It can be written as a sum of positive squares in 4 ways, for example, as 4243600 + 138509361 = 2060^2 + 11769^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-142752961 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 142752961.

It is not an unprimeable number, because it can be changed into a prime (142752901) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 322750 + ... + 323191.

It is an arithmetic number, because the mean of its divisors is an integer number (20347173).

Almost surely, 2^142752961 is an apocalyptic number.

It is an amenable number.

142752961 is a deficient number, since it is larger than the sum of its proper divisors (20024423).

142752961 is a wasteful number, since it uses less digits than its factorization.

142752961 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 645971.

The product of its digits is 30240, while the sum is 37.

The square root of 142752961 is about 11947.9270586993. The cubic root of 142752961 is about 522.6308499158.

The spelling of 142752961 in words is "one hundred forty-two million, seven hundred fifty-two thousand, nine hundred sixty-one".