999040142 has 8 divisors (see below), whose sum is σ = 1526835096. Its totient is φ = 490095112.

The previous prime is 999040129. The next prime is 999040171. The reversal of 999040142 is 241040999.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 999040096 and 999040105.

It is a congruent number.

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, 4712348 + ... + 4712559.

It is an arithmetic number, because the mean of its divisors is an integer number (190854387).

Almost surely, 2^999040142 is an apocalyptic number.

999040142 is a deficient number, since it is larger than the sum of its proper divisors (527794954).

999040142 is a wasteful number, since it uses less digits than its factorization.

999040142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9424962.

The product of its (nonzero) digits is 23328, while the sum is 38.

The square root of 999040142 is about 31607.5962705170. The cubic root of 999040142 is about 999.6799449090.

The spelling of 999040142 in words is "nine hundred ninety-nine million, forty thousand, one hundred forty-two".