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202442131 = 1914537333
BaseRepresentation
bin11000001000100…
…00010110010011
3112002221010101201
430010100112103
5403311122011
632031012031
75005505203
oct1404202623
9462833351
10202442131
11a4300851
125796a017
1332c30a58
141cc5a403
1512b8ccc1
hexc110593

202442131 has 8 divisors (see below), whose sum is σ = 213272720. Its totient is φ = 191629152.

The previous prime is 202442129. The next prime is 202442153. The reversal of 202442131 is 131244202.

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

It is a cyclic number.

It is not a de Polignac number, because 202442131 - 21 = 202442129 is a prime.

It is a super-2 number, since 2×2024421312 = 81965632807642322, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (19).

It is a junction number, because it is equal to n+sod(n) for n = 202442099 and 202442108.

It is not an unprimeable number, because it can be changed into a prime (202442101) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 23941 + ... + 31273.

It is an arithmetic number, because the mean of its divisors is an integer number (26659090).

Almost surely, 2202442131 is an apocalyptic number.

202442131 is a deficient number, since it is larger than the sum of its proper divisors (10830589).

202442131 is a wasteful number, since it uses less digits than its factorization.

202442131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8805.

The product of its (nonzero) digits is 384, while the sum is 19.

The square root of 202442131 is about 14228.2160160717. The cubic root of 202442131 is about 587.1742027038.

Adding to 202442131 its reverse (131244202), we get a palindrome (333686333).

The spelling of 202442131 in words is "two hundred two million, four hundred forty-two thousand, one hundred thirty-one".

Divisors: 1 19 1453 7333 27607 139327 10654849 202442131