142299998 has 4 divisors (see below), whose sum is σ = 213450000. Its totient is φ = 71149998.

The previous prime is 142299991. The next prime is 142300003. The reversal of 142299998 is 899992241.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 899992241 = 2069 ⋅434989.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (142299991) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35574998 + ... + 35575001.

It is an arithmetic number, because the mean of its divisors is an integer number (53362500).

Almost surely, 2^142299998 is an apocalyptic number.

142299998 is a deficient number, since it is larger than the sum of its proper divisors (71150002).

142299998 is an equidigital number, since it uses as much as digits as its factorization.

142299998 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71150001.

The product of its digits is 839808, while the sum is 53.

The square root of 142299998 is about 11928.9562829277. The cubic root of 142299998 is about 522.0774854026.

The spelling of 142299998 in words is "one hundred forty-two million, two hundred ninety-nine thousand, nine hundred ninety-eight".