340142999 has 4 divisors (see below), whose sum is σ = 388734864. Its totient is φ = 291551136.

The previous prime is 340142963. The next prime is 340143017. The reversal of 340142999 is 999241043.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 999241043 = 15121 ⋅66083.

It is a cyclic number.

It is not a de Polignac number, because 340142999 - 2⁸ = 340142743 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (340142909) 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, 24295922 + ... + 24295935.

It is an arithmetic number, because the mean of its divisors is an integer number (97183716).

Almost surely, 2^340142999 is an apocalyptic number.

340142999 is a deficient number, since it is larger than the sum of its proper divisors (48591865).

340142999 is an equidigital number, since it uses as much as digits as its factorization.

340142999 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48591864.

The product of its (nonzero) digits is 69984, while the sum is 41.

The square root of 340142999 is about 18442.9661117728. The cubic root of 340142999 is about 698.0510405940.

The spelling of 340142999 in words is "three hundred forty million, one hundred forty-two thousand, nine hundred ninety-nine".