Search a number
-
+
10102231242 = 232561235069
BaseRepresentation
bin10010110100010001…
…11101000011001010
3222002001010112000200
421122020331003022
5131142132344432
64350233513030
7505225356135
oct113210750312
928061115020
1010102231242
11431449a944
121b5b272776
13c4cc3272c
146bb97521c
153e1d53a7c
hex25a23d0ca

10102231242 has 12 divisors (see below), whose sum is σ = 21888167730. Its totient is φ = 3367410408.

The previous prime is 10102231241. The next prime is 10102231253. The reversal of 10102231242 is 24213220101.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 7421994801 + 2680236441 = 86151^2 + 51771^2 .

It is a Harshad number since it is a multiple of its sum of digits (18), and also a Moran number because the ratio is a prime number: 561235069 = 10102231242 / (1 + 0 + 1 + 0 + 2 + 2 + 3 + 1 + 2 + 4 + 2).

It is not an unprimeable number, because it can be changed into a prime (10102231241) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 280617517 + ... + 280617552.

Almost surely, 210102231242 is an apocalyptic number.

10102231242 is an abundant number, since it is smaller than the sum of its proper divisors (11785936488).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

10102231242 is a wasteful number, since it uses less digits than its factorization.

10102231242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 561235077 (or 561235074 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

Adding to 10102231242 its reverse (24213220101), we get a palindrome (34315451343).

The spelling of 10102231242 in words is "ten billion, one hundred two million, two hundred thirty-one thousand, two hundred forty-two".

Divisors: 1 2 3 6 9 18 561235069 1122470138 1683705207 3367410414 5051115621 10102231242