142509995 has 4 divisors (see below), whose sum is σ = 171012000. Its totient is φ = 114007992.

The previous prime is 142509967. The next prime is 142510009. The reversal of 142509995 is 599905241.

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

It is a cyclic number.

It is not a de Polignac number, because 142509995 - 2⁶ = 142509931 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14250995 + ... + 14251004.

It is an arithmetic number, because the mean of its divisors is an integer number (42753000).

Almost surely, 2^142509995 is an apocalyptic number.

142509995 is a deficient number, since it is larger than the sum of its proper divisors (28502005).

142509995 is an equidigital number, since it uses as much as digits as its factorization.

142509995 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28502004.

The product of its (nonzero) digits is 145800, while the sum is 44.

The square root of 142509995 is about 11937.7550234539. The cubic root of 142509995 is about 522.3341750742.

The spelling of 142509995 in words is "one hundred forty-two million, five hundred nine thousand, nine hundred ninety-five".