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145430130242 = 272715065121
BaseRepresentation
bin1000011101110001001…
…1111010111001000010
3111220101021110002002002
42013130103322321002
54340320103131432
6150450520224002
713335615465545
oct2073423727102
9456337402062
10145430130242
1156749576391
122422830b002
1310938881507
14707889885c
153bb27dde62
hex21dc4fae42

145430130242 has 4 divisors (see below), whose sum is σ = 218145195366. Its totient is φ = 72715065120.

The previous prime is 145430130229. The next prime is 145430130247. The reversal of 145430130242 is 242031034541.

145430130242 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., 92263455001 + 53166675241 = 303749^2 + 230579^2 .

It is a super-2 number, since 2×1454301302422 (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (145430130247) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36357532559 + ... + 36357532562.

Almost surely, 2145430130242 is an apocalyptic number.

145430130242 is a deficient number, since it is larger than the sum of its proper divisors (72715065124).

145430130242 is an equidigital number, since it uses as much as digits as its factorization.

145430130242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72715065123.

The product of its (nonzero) digits is 11520, while the sum is 29.

Adding to 145430130242 its reverse (242031034541), we get a palindrome (387461164783).

The spelling of 145430130242 in words is "one hundred forty-five billion, four hundred thirty million, one hundred thirty thousand, two hundred forty-two".

Divisors: 1 2 72715065121 145430130242