20153342 has 8 divisors (see below), whose sum is σ = 32978232. Its totient is φ = 9160600.

The previous prime is 20153339. The next prime is 20153351. The reversal of 20153342 is 24335102.

It is a happy number.

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 polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 458009 + ... + 458052.

It is an arithmetic number, because the mean of its divisors is an integer number (4122279).

Almost surely, 2^20153342 is an apocalyptic number.

20153342 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

20153342 is a deficient number, since it is larger than the sum of its proper divisors (12824890).

20153342 is a wasteful number, since it uses less digits than its factorization.

20153342 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 916074.

The product of its (nonzero) digits is 720, while the sum is 20.

The square root of 20153342 is about 4489.2473756745. The cubic root of 20153342 is about 272.1337199336.

Adding to 20153342 its reverse (24335102), we get a palindrome (44488444).

The spelling of 20153342 in words is "twenty million, one hundred fifty-three thousand, three hundred forty-two".