142498817 has 4 divisors (see below), whose sum is σ = 142837716. Its totient is φ = 142159920.

The previous prime is 142498813. The next prime is 142498819. The reversal of 142498817 is 718894241.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 26204161 + 116294656 = 5119^2 + 10784^2 .

It is a cyclic number.

It is not a de Polignac number, because 142498817 - 2² = 142498813 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (142498813) 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, 168818 + ... + 169659.

It is an arithmetic number, because the mean of its divisors is an integer number (35709429).

Almost surely, 2^142498817 is an apocalyptic number.

It is an amenable number.

142498817 is a deficient number, since it is larger than the sum of its proper divisors (338899).

142498817 is an equidigital number, since it uses as much as digits as its factorization.

142498817 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 338898.

The product of its digits is 129024, while the sum is 44.

The square root of 142498817 is about 11937.2868357931. The cubic root of 142498817 is about 522.3205180109.

The spelling of 142498817 in words is "one hundred forty-two million, four hundred ninety-eight thousand, eight hundred seventeen".