142603641 has 6 divisors (see below), whose sum is σ = 205983050. Its totient is φ = 95069088.

The previous prime is 142603639. The next prime is 142603663. The reversal of 142603641 is 146306241.

142603641 is a `hidden beast` number, since 14 + 2 + 6 + 0 + 3 + 641 = 666.

It can be written as a sum of positive squares in only one way, i.e., 75429225 + 67174416 = 8685^2 + 8196^2 .

It is not a de Polignac number, because 142603641 - 2¹ = 142603639 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (142603621) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 7922416 + ... + 7922433.

Almost surely, 2^142603641 is an apocalyptic number.

It is an amenable number.

142603641 is a deficient number, since it is larger than the sum of its proper divisors (63379409).

142603641 is a wasteful number, since it uses less digits than its factorization.

142603641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15844855 (or 15844852 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 27.

The square root of 142603641 is about 11941.6766410752. The cubic root of 142603641 is about 522.4485618952.

Adding to 142603641 its reverse (146306241), we get a palindrome (288909882).

The spelling of 142603641 in words is "one hundred forty-two million, six hundred three thousand, six hundred forty-one".