20158342 has 8 divisors (see below), whose sum is σ = 30280032. Its totient is φ = 10065000.

The previous prime is 20158337. The next prime is 20158363. The reversal of 20158342 is 24385102.

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

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5209 + ... + 8212.

It is an arithmetic number, because the mean of its divisors is an integer number (3785004).

Almost surely, 2^20158342 is an apocalyptic number.

20158342 is a deficient number, since it is larger than the sum of its proper divisors (10121690).

20158342 is a wasteful number, since it uses less digits than its factorization.

20158342 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14174.

The product of its (nonzero) digits is 1920, while the sum is 25.

The square root of 20158342 is about 4489.8042273578. The cubic root of 20158342 is about 272.1562233326.

The spelling of 20158342 in words is "twenty million, one hundred fifty-eight thousand, three hundred forty-two".