142640884 has 6 divisors (see below), whose sum is σ = 249621554. Its totient is φ = 71320440.

The previous prime is 142640881. The next prime is 142640887. The reversal of 142640884 is 488046241.

It is an interprime number because it is at equal distance from previous prime (142640881) and next prime (142640887).

It can be written as a sum of positive squares in only one way, i.e., 142563600 + 77284 = 11940^2 + 278^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (142640881) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 17830107 + ... + 17830114.

Almost surely, 2^142640884 is an apocalyptic number.

It is an amenable number.

142640884 is a deficient number, since it is larger than the sum of its proper divisors (106980670).

142640884 is a wasteful number, since it uses less digits than its factorization.

142640884 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35660225 (or 35660223 counting only the distinct ones).

The product of its (nonzero) digits is 49152, while the sum is 37.

The square root of 142640884 is about 11943.2359099199. The cubic root of 142640884 is about 522.4940395984.

The spelling of 142640884 in words is "one hundred forty-two million, six hundred forty thousand, eight hundred eighty-four".