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144020137 is a prime number
BaseRepresentation
bin10001001010110…
…01001010101001
3101000222222111011
420211121022221
5243332121022
622142503521
73366102532
oct1045311251
9330888434
10144020137
1174328508
1240294ba1
1323ab7121
14151ad689
15c99c977
hex89592a9

144020137 has 2 divisors, whose sum is σ = 144020138. Its totient is φ = 144020136.

The previous prime is 144020113. The next prime is 144020183. The reversal of 144020137 is 731020441.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 92525161 + 51494976 = 9619^2 + 7176^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-144020137 is a prime.

It is a super-2 number, since 2×1440201372 = 41483599722997538, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (144020197) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 72010068 + 72010069.

It is an arithmetic number, because the mean of its divisors is an integer number (72010069).

Almost surely, 2144020137 is an apocalyptic number.

It is an amenable number.

144020137 is a deficient number, since it is larger than the sum of its proper divisors (1).

144020137 is an equidigital number, since it uses as much as digits as its factorization.

144020137 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 672, while the sum is 22.

The square root of 144020137 is about 12000.8390123358. The cubic root of 144020137 is about 524.1727100500.

Adding to 144020137 its reverse (731020441), we get a palindrome (875040578).

The spelling of 144020137 in words is "one hundred forty-four million, twenty thousand, one hundred thirty-seven".