Search a number
-
+
230101442 = 2115050721
BaseRepresentation
bin11011011011100…
…01000111000010
3121000222100211122
431231301013002
5432401221232
634455512242
75462554454
oct1555610702
9530870748
10230101442
1110898268a
1265088682
13388964cc
14227ba2d4
1515303312
hexdb711c2

230101442 has 4 divisors (see below), whose sum is σ = 345152166. Its totient is φ = 115050720.

The previous prime is 230101433. The next prime is 230101447. The reversal of 230101442 is 244101032.

230101442 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 183575401 + 46526041 = 13549^2 + 6821^2 .

It is a super-2 number, since 2×2301014422 = 105893347220958728, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 230101442.

It is not an unprimeable number, because it can be changed into a prime (230101447) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 57525359 + ... + 57525362.

Almost surely, 2230101442 is an apocalyptic number.

230101442 is a deficient number, since it is larger than the sum of its proper divisors (115050724).

230101442 is a wasteful number, since it uses less digits than its factorization.

230101442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 115050723.

The product of its (nonzero) digits is 192, while the sum is 17.

The square root of 230101442 is about 15169.0949631150. The cubic root of 230101442 is about 612.7826307462.

Adding to 230101442 its reverse (244101032), we get a palindrome (474202474).

The spelling of 230101442 in words is "two hundred thirty million, one hundred one thousand, four hundred forty-two".

Divisors: 1 2 115050721 230101442