202154243 has 16 divisors (see below), whose sum is σ = 217797120. Its totient is φ = 187046496.

The previous prime is 202154221. The next prime is 202154257. The reversal of 202154243 is 342451202.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 202154243 - 2⁶ = 202154179 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (202154203) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 369296 + ... + 369842.

It is an arithmetic number, because the mean of its divisors is an integer number (13612320).

Almost surely, 2^202154243 is an apocalyptic number.

202154243 is a deficient number, since it is larger than the sum of its proper divisors (15642877).

202154243 is a wasteful number, since it uses less digits than its factorization.

202154243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 986.

The product of its (nonzero) digits is 1920, while the sum is 23.

The square root of 202154243 is about 14218.0956179089. The cubic root of 202154243 is about 586.8957353071.

The spelling of 202154243 in words is "two hundred two million, one hundred fifty-four thousand, two hundred forty-three".