202154140023 has 16 divisors (see below), whose sum is σ = 295435961472. Its totient is φ = 121937004000.

The previous prime is 202154139991. The next prime is 202154140043. The reversal of 202154140023 is 320041451202.

It is not a de Polignac number, because 202154140023 - 2⁵ = 202154139991 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 202154139975 and 202154140002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (202154140043) 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, 14509348 + ... + 14523273.

It is an arithmetic number, because the mean of its divisors is an integer number (18464747592).

Almost surely, 2^202154140023 is an apocalyptic number.

202154140023 is a deficient number, since it is larger than the sum of its proper divisors (93281821449).

202154140023 is a wasteful number, since it uses less digits than its factorization.

202154140023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29032846.

The product of its (nonzero) digits is 1920, while the sum is 24.

Adding to 202154140023 its reverse (320041451202), we get a palindrome (522195591225).

The spelling of 202154140023 in words is "two hundred two billion, one hundred fifty-four million, one hundred forty thousand, twenty-three".