142402297 has 4 divisors (see below), whose sum is σ = 143309476. Its totient is φ = 141495120.

The previous prime is 142402291. The next prime is 142402301. The reversal of 142402297 is 792204241.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 792204241 = 113 ⋅7010657.

It can be written as a sum of positive squares in 2 ways, for example, as 60155536 + 82246761 = 7756^2 + 9069^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-142402297 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (142402291) 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, 453354 + ... + 453667.

It is an arithmetic number, because the mean of its divisors is an integer number (35827369).

Almost surely, 2^142402297 is an apocalyptic number.

It is an amenable number.

142402297 is a deficient number, since it is larger than the sum of its proper divisors (907179).

142402297 is an equidigital number, since it uses as much as digits as its factorization.

142402297 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 907178.

The product of its (nonzero) digits is 8064, while the sum is 31.

The square root of 142402297 is about 11933.2433562716. The cubic root of 142402297 is about 522.2025620300.

The spelling of 142402297 in words is "one hundred forty-two million, four hundred two thousand, two hundred ninety-seven".