142946497 has 4 divisors (see below), whose sum is σ = 142970580. Its totient is φ = 142922416.

The previous prime is 142946477. The next prime is 142946509. The reversal of 142946497 is 794649241.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 126697536 + 16248961 = 11256^2 + 4031^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-142946497 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (142946407) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3879 + ... + 17347.

It is an arithmetic number, because the mean of its divisors is an integer number (35742645).

Almost surely, 2^142946497 is an apocalyptic number.

It is an amenable number.

142946497 is a deficient number, since it is larger than the sum of its proper divisors (24083).

142946497 is a wasteful number, since it uses less digits than its factorization.

142946497 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24082.

The product of its digits is 435456, while the sum is 46.

The square root of 142946497 is about 11956.0234610007. The cubic root of 142946497 is about 522.8669272337.

The spelling of 142946497 in words is "one hundred forty-two million, nine hundred forty-six thousand, four hundred ninety-seven".